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Good.">Download</a></li> </ul> </div> </div> <div id="headline"> <div class="wrapper"> <h2>Codex</h2> <div class="portlet" id="p-personal"> <p class="login">Codex tools: <a href="/web/20130127231851/http://codex.wordpress.org/index.php?title=Special:UserLogin&returnto=Glossary">Log in</a> </p> </div> </div> </div> <div id="pagebody"> <div class="wrapper"> <div class="col-10" id="bodyContent"> <h2 class="pagetitle">Glossary</h2>  <p class="LanguageLinks" style="border:1px solid #CCCCCC; line-height:1.5; text-align:left; color:#333333; font-size:90%; padding:10px;"><span style="white-space:nowrap;"><a href="/web/20130127231851/http://codex.wordpress.org/Multilingual_Codex" title="Multilingual Codex" class="mw-redirect">Languages</a>:</span> <strong class="selflink">English</strong> • <a href="https://web.archive.org/web/20130127231851/http://wpdocs.sourceforge.jp/%E7%94%A8%E8%AA%9E%E9%9B%86" class="external text" title="http://wpdocs.sourceforge.jp/%E7%94%A8%E8%AA%9E%E9%9B%86">日本語</a> • <a href="/web/20130127231851/http://codex.wordpress.org/ko:Glossary" title="ko:Glossary">한국어</a> • <a href="/web/20130127231851/http://codex.wordpress.org/pt-br:Gloss%C3%A1rio" title="pt-br:Glossário">Português do Brasil</a> • <a href="/web/20130127231851/http://codex.wordpress.org/%D0%93%D0%BB%D0%BE%D1%81%D1%81%D0%B0%D1%80%D0%B8%D0%B9" title="Глоссарий">Русский</a> • <a href="/web/20130127231851/http://codex.wordpress.org/sk:Slovn%C3%ADk" title="sk:Slovník">Slovenčina</a> • <a href="https://web.archive.org/web/20130127231851/http://codex.wordthai.com/Glossary" class="external text" title="http://codex.wordthai.com/Glossary">ไทย</a> • <a href="/web/20130127231851/http://codex.wordpress.org/zh-cn:%E6%9C%AF%E8%AF%AD%E8%A1%A8" title="zh-cn:术语表">中文(简体)</a> • <a href="/web/20130127231851/http://codex.wordpress.org/zh-tw:%E8%A1%93%E8%AA%9E" title="zh-tw:術語">中文(繁體)</a> • <small>(<a href="/web/20130127231851/http://codex.wordpress.org/Multilingual_Codex#Language_Cross_Reference" title="Multilingual Codex" class="mw-redirect">Add your language</a>)</small> </p> <div id="top"></div> <table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div> <ul> <li class="toclevel-1"><a href="#Absolute_Path"><span class="tocnumber">1</span> <span class="toctext">Absolute Path</span></a></li> <li class="toclevel-1"><a href="#Absolute_URI"><span class="tocnumber">2</span> <span class="toctext">Absolute URI</span></a></li> <li class="toclevel-1"><a href="#Action"><span class="tocnumber">3</span> <span class="toctext">Action</span></a></li> <li class="toclevel-1"><a href="#Admin_Bar"><span class="tocnumber">4</span> <span class="toctext">Admin Bar</span></a></li> <li class="toclevel-1"><a href="#AJAX"><span class="tocnumber">5</span> <span class="toctext">AJAX</span></a></li> <li class="toclevel-1"><a href="#Apache"><span class="tocnumber">6</span> <span class="toctext">Apache</span></a></li> <li class="toclevel-1"><a href="#Array"><span class="tocnumber">7</span> <span class="toctext">Array</span></a></li> <li class="toclevel-1"><a href="#ASCII"><span class="tocnumber">8</span> <span class="toctext">ASCII</span></a></li> <li class="toclevel-1"><a href="#Atom"><span class="tocnumber">9</span> <span class="toctext">Atom</span></a></li> <li class="toclevel-1"><a href="#Autosave"><span class="tocnumber">10</span> <span class="toctext">Autosave</span></a></li> <li class="toclevel-1"><a href="#Avatar"><span class="tocnumber">11</span> <span class="toctext">Avatar</span></a></li> <li class="toclevel-1"><a href="#Back_End"><span class="tocnumber">12</span> <span class="toctext">Back End</span></a></li> <li class="toclevel-1"><a href="#Binaries"><span class="tocnumber">13</span> <span class="toctext">Binaries</span></a></li> <li class="toclevel-1"><a href="#Blog"><span class="tocnumber">14</span> <span class="toctext">Blog</span></a></li> <li class="toclevel-1"><a href="#Blogging"><span class="tocnumber">15</span> <span class="toctext">Blogging</span></a></li> <li class="toclevel-1"><a href="#Blogosphere"><span class="tocnumber">16</span> <span class="toctext">Blogosphere</span></a></li> <li class="toclevel-1"><a href="#Blogroll"><span class="tocnumber">17</span> <span class="toctext">Blogroll</span></a></li> <li class="toclevel-1"><a href="#Bookmarklet"><span class="tocnumber">18</span> <span class="toctext">Bookmarklet</span></a></li> <li class="toclevel-1"><a href="#Boolean"><span class="tocnumber">19</span> <span class="toctext">Boolean</span></a></li> <li class="toclevel-1"><a href="#Category"><span class="tocnumber">20</span> <span class="toctext">Category</span></a></li> <li class="toclevel-1"><a href="#Capabilities"><span class="tocnumber">21</span> <span class="toctext">Capabilities</span></a></li> <li class="toclevel-1"><a href="#CGI"><span class="tocnumber">22</span> <span class="toctext">CGI</span></a></li> <li class="toclevel-1"><a href="#Character_Entity"><span class="tocnumber">23</span> <span class="toctext">Character Entity</span></a></li> <li class="toclevel-1"><a href="#Character_Set"><span class="tocnumber">24</span> <span class="toctext">Character Set</span></a></li> <li class="toclevel-1"><a href="#chmod"><span class="tocnumber">25</span> <span class="toctext">chmod</span></a></li> <li class="toclevel-1"><a href="#Class"><span class="tocnumber">26</span> <span class="toctext">Class</span></a></li> <li class="toclevel-1"><a href="#Collation"><span class="tocnumber">27</span> <span class="toctext">Collation</span></a></li> <li class="toclevel-1"><a href="#Comments"><span class="tocnumber">28</span> <span class="toctext">Comments</span></a></li> <li class="toclevel-1"><a href="#Content"><span class="tocnumber">29</span> <span class="toctext">Content</span></a></li> <li class="toclevel-1"><a href="#Content_Management_System"><span class="tocnumber">30</span> <span class="toctext">Content Management System</span></a></li> <li class="toclevel-1"><a href="#cPanel"><span class="tocnumber">31</span> <span class="toctext">cPanel</span></a></li> <li class="toclevel-1"><a href="#CSS"><span class="tocnumber">32</span> <span class="toctext">CSS</span></a></li> <li class="toclevel-1"><a href="#Dashboard"><span class="tocnumber">33</span> <span class="toctext">Dashboard</span></a></li> <li class="toclevel-1"><a href="#Database"><span class="tocnumber">34</span> <span class="toctext">Database</span></a></li> <li class="toclevel-1"><a href="#Database_version"><span class="tocnumber">35</span> <span class="toctext">Database version</span></a></li> <li class="toclevel-1"><a href="#Default_theme"><span class="tocnumber">36</span> <span class="toctext">Default theme</span></a></li> <li class="toclevel-1"><a href="#Deprecated"><span class="tocnumber">37</span> <span class="toctext">Deprecated</span></a></li> <li class="toclevel-1"><a href="#Developer"><span class="tocnumber">38</span> <span class="toctext">Developer</span></a></li> <li class="toclevel-1"><a href="#DIV"><span class="tocnumber">39</span> <span class="toctext">DIV</span></a></li> <li class="toclevel-1"><a href="#DNS"><span class="tocnumber">40</span> <span class="toctext">DNS</span></a></li> <li class="toclevel-1"><a href="#DOM"><span class="tocnumber">41</span> <span class="toctext">DOM</span></a></li> <li class="toclevel-1"><a href="#Domain_name"><span class="tocnumber">42</span> <span class="toctext">Domain name</span></a></li> <li class="toclevel-1"><a href="#Draft"><span class="tocnumber">43</span> <span class="toctext">Draft</span></a></li> <li class="toclevel-1"><a href="#Excerpt"><span class="tocnumber">44</span> <span class="toctext">Excerpt</span></a></li> <li class="toclevel-1"><a href="#Feed"><span class="tocnumber">45</span> <span class="toctext">Feed</span></a></li> <li class="toclevel-1"><a href="#Filter"><span class="tocnumber">46</span> <span class="toctext">Filter</span></a></li> <li class="toclevel-1"><a href="#Footer_area"><span class="tocnumber">47</span> <span class="toctext">Footer area</span></a></li> <li class="toclevel-1"><a href="#Front_End"><span class="tocnumber">48</span> <span class="toctext">Front End</span></a></li> <li class="toclevel-1"><a href="#FTP"><span class="tocnumber">49</span> <span class="toctext">FTP</span></a></li> <li class="toclevel-1"><a href="#Gallery"><span class="tocnumber">50</span> <span class="toctext">Gallery</span></a></li> <li class="toclevel-1"><a href="#gettext"><span class="tocnumber">51</span> <span class="toctext">gettext</span></a></li> <li class="toclevel-1"><a href="#GMT"><span class="tocnumber">52</span> <span class="toctext">GMT</span></a></li> <li class="toclevel-1"><a href="#Gravatar"><span class="tocnumber">53</span> <span class="toctext">Gravatar</span></a></li> <li class="toclevel-1"><a href="#Hack"><span class="tocnumber">54</span> <span class="toctext">Hack</span></a></li> <li class="toclevel-1"><a href="#Hacking"><span class="tocnumber">55</span> <span class="toctext">Hacking</span></a></li> <li class="toclevel-1"><a href="#Hook"><span class="tocnumber">56</span> <span class="toctext">Hook</span></a></li> <li class="toclevel-1"><a href="#Hosting_provider"><span class="tocnumber">57</span> <span class="toctext">Hosting provider</span></a></li> <li class="toclevel-1"><a href="#.htaccess"><span class="tocnumber">58</span> <span class="toctext">.htaccess</span></a></li> <li class="toclevel-1"><a href="#HTML"><span class="tocnumber">59</span> <span class="toctext">HTML</span></a></li> <li class="toclevel-1"><a href="#IP_address"><span class="tocnumber">60</span> <span class="toctext">IP address</span></a></li> <li class="toclevel-1"><a href="#ISAPI"><span class="tocnumber">61</span> <span class="toctext">ISAPI</span></a></li> <li class="toclevel-1"><a href="#JavaScript"><span class="tocnumber">62</span> <span class="toctext">JavaScript</span></a></li> <li class="toclevel-1"><a href="#Linux"><span class="tocnumber">63</span> <span class="toctext">Linux</span></a></li> <li class="toclevel-1"><a href="#Mac_OS_X"><span class="tocnumber">64</span> <span class="toctext">Mac OS X</span></a></li> <li class="toclevel-1"><a href="#Meta"><span class="tocnumber">65</span> <span class="toctext">Meta</span></a></li> <li class="toclevel-1"><a href="#Microformats"><span class="tocnumber">66</span> <span class="toctext">Microformats</span></a></li> <li class="toclevel-1"><a href="#Moblogging"><span class="tocnumber">67</span> <span class="toctext">Moblogging</span></a></li> <li class="toclevel-1"><a href="#mod_rewrite"><span class="tocnumber">68</span> <span class="toctext">mod_rewrite</span></a></li> <li class="toclevel-1"><a href="#Multisite"><span class="tocnumber">69</span> <span class="toctext">Multisite</span></a></li> <li class="toclevel-1"><a href="#MySQL"><span class="tocnumber">70</span> <span class="toctext">MySQL</span></a></li> <li class="toclevel-1"><a href="#Navigation"><span class="tocnumber">71</span> <span class="toctext">Navigation</span></a></li> <li class="toclevel-1"><a href="#Network"><span class="tocnumber">72</span> <span class="toctext">Network</span></a></li> <li class="toclevel-1"><a href="#News_reader"><span class="tocnumber">73</span> <span class="toctext">News reader</span></a></li> <li class="toclevel-1"><a href="#Open_Source"><span class="tocnumber">74</span> <span class="toctext">Open Source</span></a></li> <li class="toclevel-1"><a href="#Output_Compression"><span class="tocnumber">75</span> <span class="toctext">Output Compression</span></a></li> <li class="toclevel-1"><a href="#Page"><span class="tocnumber">76</span> <span class="toctext">Page</span></a></li> <li class="toclevel-1"><a href="#Perl"><span class="tocnumber">77</span> <span class="toctext">Perl</span></a></li> <li class="toclevel-1"><a href="#Permalink"><span class="tocnumber">78</span> <span class="toctext">Permalink</span></a></li> <li class="toclevel-1"><a href="#Permissions"><span class="tocnumber">79</span> <span class="toctext">Permissions</span></a></li> <li class="toclevel-1"><a href="#PHP"><span class="tocnumber">80</span> <span class="toctext">PHP</span></a></li> <li class="toclevel-1"><a href="#phpMyAdmin"><span class="tocnumber">81</span> <span class="toctext">phpMyAdmin</span></a></li> <li class="toclevel-1"><a href="#Ping"><span class="tocnumber">82</span> <span class="toctext">Ping</span></a></li> <li class="toclevel-1"><a href="#Pingback"><span class="tocnumber">83</span> <span class="toctext">Pingback</span></a></li> <li class="toclevel-1"><a href="#Plugin"><span class="tocnumber">84</span> <span class="toctext">Plugin</span></a></li> <li class="toclevel-1"><a href="#Port"><span class="tocnumber">85</span> <span class="toctext">Port</span></a></li> <li class="toclevel-1"><a href="#Post"><span class="tocnumber">86</span> <span class="toctext">Post</span></a></li> <li class="toclevel-1"><a href="#Post_Slug"><span class="tocnumber">87</span> <span class="toctext">Post Slug</span></a></li> <li class="toclevel-1"><a href="#Post_Status"><span class="tocnumber">88</span> <span class="toctext">Post Status</span></a></li> <li class="toclevel-1"><a href="#Post_Type"><span class="tocnumber">89</span> <span class="toctext">Post Type</span></a></li> <li class="toclevel-1"><a href="#Query_string"><span class="tocnumber">90</span> <span class="toctext">Query string</span></a></li> <li class="toclevel-1"><a href="#Query_Variable"><span class="tocnumber">91</span> <span class="toctext">Query Variable</span></a></li> <li class="toclevel-1"><a href="#QuickTag"><span class="tocnumber">92</span> <span class="toctext">QuickTag</span></a></li> <li class="toclevel-1"><a href="#RDF"><span class="tocnumber">93</span> <span class="toctext">RDF</span></a></li> <li class="toclevel-1"><a href="#Relative_Path"><span class="tocnumber">94</span> <span class="toctext">Relative Path</span></a></li> <li class="toclevel-1"><a href="#Relative_URI"><span class="tocnumber">95</span> <span class="toctext">Relative URI</span></a></li> <li class="toclevel-1"><a href="#Recordset"><span class="tocnumber">96</span> <span class="toctext">Recordset</span></a></li> <li class="toclevel-1"><a href="#RSS"><span class="tocnumber">97</span> <span class="toctext">RSS</span></a></li> <li class="toclevel-1"><a href="#RTL"><span class="tocnumber">98</span> <span class="toctext">RTL</span></a></li> <li class="toclevel-1"><a href="#Robots.txt"><span class="tocnumber">99</span> <span class="toctext">Robots.txt</span></a></li> <li class="toclevel-1"><a href="#Role"><span class="tocnumber">100</span> <span class="toctext">Role</span></a></li> <li class="toclevel-1"><a href="#Screen"><span class="tocnumber">101</span> <span class="toctext">Screen</span></a></li> <li class="toclevel-1"><a href="#Shell"><span class="tocnumber">102</span> <span class="toctext">Shell</span></a></li> <li class="toclevel-1"><a href="#Shortcode"><span class="tocnumber">103</span> <span class="toctext">Shortcode</span></a></li> <li class="toclevel-1"><a href="#Sidebar"><span class="tocnumber">104</span> <span class="toctext">Sidebar</span></a></li> <li class="toclevel-1"><a href="#Site"><span class="tocnumber">105</span> <span class="toctext">Site</span></a></li> <li class="toclevel-1"><a href="#Slug"><span class="tocnumber">106</span> <span class="toctext">Slug</span></a></li> <li class="toclevel-1"><a href="#Smileys"><span class="tocnumber">107</span> <span class="toctext">Smileys</span></a></li> <li class="toclevel-1"><a href="#Spam"><span class="tocnumber">108</span> <span class="toctext">Spam</span></a></li> <li class="toclevel-1"><a href="#SSH"><span class="tocnumber">109</span> <span class="toctext">SSH</span></a></li> <li class="toclevel-1"><a href="#SSL"><span class="tocnumber">110</span> <span class="toctext">SSL</span></a></li> <li class="toclevel-1"><a href="#String"><span class="tocnumber">111</span> <span class="toctext">String</span></a></li> <li class="toclevel-1"><a href="#Subversion"><span class="tocnumber">112</span> <span class="toctext">Subversion</span></a></li> <li class="toclevel-1"><a href="#Syndication"><span class="tocnumber">113</span> <span class="toctext">Syndication</span></a></li> <li class="toclevel-1"><a href="#Tag"><span class="tocnumber">114</span> <span class="toctext">Tag</span></a></li> <li class="toclevel-1"><a href="#Tagline"><span class="tocnumber">115</span> <span class="toctext">Tagline</span></a></li> <li class="toclevel-1"><a href="#Task_Based_Documentation"><span class="tocnumber">116</span> <span class="toctext">Task Based Documentation</span></a></li> <li class="toclevel-1"><a href="#Taxonomy"><span class="tocnumber">117</span> <span class="toctext">Taxonomy</span></a></li> <li class="toclevel-1"><a href="#Telnet"><span class="tocnumber">118</span> <span class="toctext">Telnet</span></a></li> <li class="toclevel-1"><a href="#Template"><span class="tocnumber">119</span> <span class="toctext">Template</span></a></li> <li class="toclevel-1"><a href="#Text_editor"><span class="tocnumber">120</span> <span class="toctext">Text editor</span></a></li> <li class="toclevel-1"><a href="#Theme"><span class="tocnumber">121</span> <span class="toctext">Theme</span></a></li> <li class="toclevel-1"><a href="#Trackback"><span class="tocnumber">122</span> <span class="toctext">Trackback</span></a></li> <li class="toclevel-1"><a href="#Toolbar"><span class="tocnumber">123</span> <span class="toctext">Toolbar</span></a></li> <li class="toclevel-1"><a href="#Twenty_Twelve_theme"><span class="tocnumber">124</span> <span class="toctext">Twenty Twelve theme</span></a></li> <li class="toclevel-1"><a href="#Twenty_Eleven_theme"><span class="tocnumber">125</span> <span class="toctext">Twenty Eleven theme</span></a></li> <li class="toclevel-1"><a href="#Twenty_Ten_theme"><span class="tocnumber">126</span> <span class="toctext">Twenty Ten theme</span></a></li> <li class="toclevel-1"><a href="#Unicode"><span class="tocnumber">127</span> <span class="toctext">Unicode</span></a></li> <li class="toclevel-1"><a href="#Unix"><span class="tocnumber">128</span> <span class="toctext">Unix</span></a></li> <li class="toclevel-1"><a href="#Unix_Time"><span class="tocnumber">129</span> <span class="toctext">Unix Time</span></a></li> <li class="toclevel-1"><a href="#UTC"><span class="tocnumber">130</span> <span class="toctext">UTC</span></a></li> <li class="toclevel-1"><a href="#Web_server"><span class="tocnumber">131</span> <span class="toctext">Web server</span></a></li> <li class="toclevel-1"><a href="#Widget"><span class="tocnumber">132</span> <span class="toctext">Widget</span></a></li> <li class="toclevel-1"><a href="#XFN"><span class="tocnumber">133</span> <span class="toctext">XFN</span></a></li> <li class="toclevel-1"><a href="#XHTML"><span class="tocnumber">134</span> <span class="toctext">XHTML</span></a></li> <li class="toclevel-1"><a href="#XML"><span class="tocnumber">135</span> <span class="toctext">XML</span></a></li> <li class="toclevel-1"><a href="#XML-RPC"><span class="tocnumber">136</span> <span class="toctext">XML-RPC</span></a></li> <li class="toclevel-1"><a href="#More_Resources"><span class="tocnumber">137</span> <span class="toctext">More Resources</span></a></li> </ul> </td></tr></table><script type="text/javascript"> if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } </script> <a name="Absolute_Path" id="Absolute_Path"></a><h2> <span class="mw-headline"> Absolute Path </span></h2> <p>An <b>absolute path</b> or <b>full path</b> is a unique location of a file or directory name within a computer or filesystem, and usually starts with the root directory or drive letter. Directories and subdirectories listed in a path are usually separated by a slash <code>/</code>. </p><p>Example: <code>/Users/Matt/www/blog/images/icecream.jpg</code> </p><p>To find the <i>absolute path</i> of a page, copy the text below into a new text file, save the file as <code>path.php</code>. Then open it in a Web browser (for example, <code><a href="https://web.archive.org/web/20130127231851/http://www.example.com/images/path.php" class="external free" title="http://www.example.com/images/path.php">http://www.example.com/images/path.php</a></code>). </p> <pre> <?php $p = getcwd(); echo $p;  ?> </pre> <ul><li> See also: <a href="#Relative_Path" title="">Relative Path</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Path_(computing)" class="external text" title="http://en.wikipedia.org/wiki/Path_(computing)">Path (computing) at Wikipedia</a> </li></ul> <a name="Absolute_URI" id="Absolute_URI"></a><h2> <span class="mw-headline"> Absolute URI </span></h2> <p>A full URI. </p> <pre> http://www.example.com/blog/images/icecream.jpg ftp://ftp.example.com/users/h/harriet/www/ </pre> <a name="Action" id="Action"></a><h2> <span class="mw-headline"> Action </span></h2> <p>In WordPress code, an <b>action</b> or <b>action hook</b> is an identifier that can cause one or more associated ("hooked") functions to be run at a particular point in the code's execution. For example, a plugin or theme can hook a function to the action <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API/Action_Reference/wp_footer" title="Plugin API/Action Reference/wp footer">wp_footer</a> in order to add information to the bottom of each web page that WordPress generates. </p> <ul><li> See also: <a href="#Filter" title="">Filter</a> </li></ul> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API#Actions" title="Plugin API">Actions</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API/Action_Reference" title="Plugin API/Action Reference">Action Reference</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Function_Reference/add_action" title="Function Reference/add action">add_action</a> function </li></ul> <a name="Admin_Bar" id="Admin_Bar"></a><h2> <span class="mw-headline"> Admin Bar </span></h2> <p>The <b>admin bar</b> is an area of the screen just above your site that lists useful admininstration screen links such as add a new post or edit your profile. The admin bar concept was added to WordPress in <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.1" title="Version 3.1">Version 3.1</a> and was replaced by the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Toolbar" title="Glossary">Toolbar</a> in WordPress <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.3" title="Version 3.3">Version 3.3</a>. Each user can use <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Your_Profile" title="Administration Panels" class="mw-redirect">Users</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Users_Your_Profile_SubPanel" title="Users Your Profile SubPanel" class="mw-redirect">Your Profile</a> to turn on (or off) the admin bar when viewing the site or the Dashboard. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Users_Your_Profile_SubPanel" title="Users Your Profile SubPanel" class="mw-redirect">Your Profile Screen</a> </li></ul> <a name="AJAX" id="AJAX"></a><h2> <span class="mw-headline"> AJAX </span></h2> <p><b>AJAX</b> is a technique that web pages use to have the server perform certain processing without reloading the web page. For example, when you approve a comment in a WordPress blog, WordPress uses AJAX to change the comment's status, and you see the change without having to reload the Comments screen. </p> <ul><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/AJAX" title="AJAX">AJAX</a> </li><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/AJAX" class="external text" title="http://en.wikipedia.org/wiki/AJAX">AJAX</a> (Wikipedia) </li></ul> <a name="Apache" id="Apache"></a><h2> <span class="mw-headline"> Apache </span></h2> <p><b>Apache</b> is short for <b><a href="https://web.archive.org/web/20130127231851/http://httpd.apache.org/" class="external text" title="http://httpd.apache.org/">Apache HTTP Server Project</a></b>, a robust, commercial-grade, featureful, and freely-available open source HTTP <a href="#Web_server" title="">Web Server</a> software produced by the <a href="https://web.archive.org/web/20130127231851/http://www.apache.org/" class="external text" title="http://www.apache.org/">Apache Software Foundation</a>. It is the most commonly used web server on the internet, and is available on many platforms, including Windows, <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a>, and <a href="#Mac_OS_X" title="">Mac OS X</a>. Apache serves as a great foundation for publishing WordPress-powered sites. </p> <a name="Array" id="Array"></a><h2> <span class="mw-headline"> Array </span></h2> <p>An <b>array</b> is one of the basic data structures used in computer programming. An <i>array</i> contains a list (or <i>vector</i>) of items such as numeric or string values. <i>Arrays</i> allow programmers to randomly access data. Data can be stored in either <i>one-dimensional</i> or <i>multi-dimensional arrays</i>. </p><p>A one-dimension array seven (7) elements would be: </p> <table border="1" cellpadding="3" style="border-color: #ccc; border-collapse: collapse; margin-bottom: 1em"> <tr> <th>105</th><th>200</th><th>54</th><th>53</th><th>102</th><th>13</th><th>405 </th></tr></table> <p>The <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags" title="Template Tags">Template Tag</a> <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags/wp_list_categories" title="Template Tags/wp list categories">wp_list_categories()</a> uses a one-dimensional array for the 'exclude' parameter. </p><p>An example of two-dimensional array, 7 by 3 elements in size, would be: </p> <table border="1" cellpadding="3" style="border-color: #ccc; border-collapse: collapse; margin-bottom: 1em"> <tr> <th>105</th><th>200</th><th>54</th><th>53</th><th>102</th><th>13</th><th>405 </th></tr> <tr> <th>15</th><th>210</th><th>14</th><th>513</th><th>2</th><th>2313</th><th>4512 </th></tr> <tr> <th>501</th><th>500</th><th>499</th><th>488</th><th>552</th><th>75</th><th>1952 </th></tr></table> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Array_programming" class="external text" title="http://en.wikipedia.org/wiki/Array_programming">Array Programming at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://encyclopedia.thefreedictionary.com/array" class="external text" title="http://encyclopedia.thefreedictionary.com/array">Array at freedictionary.com</a> </li></ul> <a name="ASCII" id="ASCII"></a><h2> <span class="mw-headline"> ASCII </span></h2> <p><b>ASCII</b> (pronounced as "ask ee") is a standard but limited <a href="#Character_set" title="">character set</a> containing only English letters, numbers, a few common symbols, and common English punctuation marks. WordPress <a href="#Content" title="">content</a> is not restricted to ASCII, but can include any <a href="#Unicode" title="">Unicode</a> characters. </p><p>ASCII is short for <b>A</b>merican <b>S</b>tandard <b>C</b>ode for <b>I</b>nformation <b>I</b>nterchange. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/ASCII" class="external text" title="http://en.wikipedia.org/wiki/ASCII">ASCII</a> (Wikipedia, with character set table) </li></ul> <a name="Atom" id="Atom"></a><h2> <span class="mw-headline"> Atom </span></h2> <p>A format for syndicating content on news-like sites, viewable by Atom-aware programs called news readers or aggregators. </p> <ul><li> See also: <a href="#News_reader" title="">news reader</a>, <a href="#RSS" title="">RSS</a>, <a href="#RDF" title="">RDF</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Atom_(standard)" class="external text" title="http://en.wikipedia.org/wiki/Atom_(standard)">Atom (standard) at Wikipedia</a> </li></ul> <a name="Autosave" id="Autosave"></a><h2> <span class="mw-headline"> Autosave </span></h2> <p>When you are writing or editing your posts and pages, the changes you make are automatically saved every 2 minutes. In the lower right corner of the editor, you’ll see a notification of when the entry was last saved to the database. Autosaves are automatically enabled for all posts and pages. There is only one autosave for each post/page. Each new autosave overwrites the previous autosave in the database. </p> <ul><li> See also: <a href="/web/20130127231851/http://codex.wordpress.org/Revision_Management" title="Revision Management">Revision_Management</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.support.wordpress.com/autosave/" class="external text" title="http://en.support.wordpress.com/autosave/">Wordpress.com Support - Autosave</a> </li></ul> <a name="Avatar" id="Avatar"></a><h2> <span class="mw-headline"> Avatar </span></h2> <p>An <b>avatar</b> is a graphic image or picture that represents a user. </p> <ul><li> See also: <a href="#Gravatar" title="">gravatar</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Gravatars" title="Using Gravatars">Using Gravatars</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Avatar_%28computing%29" class="external text" title="http://en.wikipedia.org/wiki/Avatar_%28computing%29">Avatar (computing) at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Back_End" id="Back_End"></a><h2> <span class="mw-headline">Back End</span></h2> <p>The back end is the area that authorized users can sign into to add, remove and modify content on the website. This may also be referred to as “WordPress”, "admin" or “the administration area”. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Binaries" id="Binaries"></a><h2> <span class="mw-headline"> Binaries </span></h2> <p><b>Binaries</b> refer to compiled computer programs, or executables. Many <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a> projects, which can be re-compiled from <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Source_code" class="external text" title="http://en.wikipedia.org/wiki/Source_code">source code</a>, offer pre-compiled binaries for the most popular platforms and operating systems. </p> <a name="Blog" id="Blog"></a><h2> <span class="mw-headline"> Blog </span></h2> <p>A <b>blog</b>, or <b>weblog</b>, is an online journal, diary, or serial published by a person or group of people. </p><p>Blogs are typically used by individuals or peer groups, but are occasionally used by companies or organizations as well. In the corporate arena, the only adopters of the blog format so far have tended to be design firms, web media companies, and other "bleeding edge" tech firms. </p><p>Blogs often contain public as well as private content. Depending on the functionality of the <a href="#Content_Management_System" title="">CMS</a> software that is used, some authors may restrict access — through the use of accounts or passwords — to content that is too personal to be published publicly. </p> <a name="Blogging" id="Blogging"></a><h2> <span class="mw-headline"> Blogging </span></h2> <p><b>Blogging</b> is the act of writing in one's blog. To <i>blog</i> something is to write about something in one's blog. This sometimes involves <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Hyperlink" class="external text" title="http://en.wikipedia.org/wiki/Hyperlink">linking</a> to something the author finds interesting on the internet. </p> <ul><li> See also: <a href="#Blogosphere" title="">blogosphere</a>, <a href="#Blogroll" title="">blogroll</a> </li></ul> <a name="Blogosphere" id="Blogosphere"></a><h2> <span class="mw-headline"> Blogosphere </span></h2> <p>The <b>blogosphere</b> is the subset of internet web sites which are, or relate to, <a href="#Blog" title="">blogs</a>. </p> <ul><li> See also: <a href="#Blog" title="">blog</a>, <a href="#Blogroll" title="">blogroll</a> </li></ul> <a name="Blogroll" id="Blogroll"></a><h2> <span class="mw-headline"> Blogroll </span></h2> <p>A <b>blogroll</b> is a list of links to various blogs or news sites. Often a blogroll is "rolled" by a service which tracks updates (using <a href="#Feed" title="">feeds</a>) to each site in the list, and provides the list in a form which aggregates update information. The default blogroll (aka links) included in WordPress was removed in version 3.5. </p> <ul><li> See also: <a href="#Blog" title="">blog</a>, <a href="#Blogosphere" title="">blogosphere</a>, <a href="#Feed" title="">feed</a>, <a href="#News_reader" title="">news reader</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/News_aggregator" class="external text" title="http://en.wikipedia.org/wiki/News_aggregator">News aggregator at Wikipedia</a> </li></ul> <a name="Bookmarklet" id="Bookmarklet"></a><h2> <span class="mw-headline"> Bookmarklet </span></h2> <p>A <b>bookmarklet</b> (or <b>favelet</b>) is a "faux" bookmark containing scripting code, usually written in <a href="#JavaScript" title="">JavaScript</a>, that allows the user to perform a function. </p> <ul><li> Examples <ul><li> The WordPress <a href="/web/20130127231851/http://codex.wordpress.org/Press_This" title="Press This">Press This</a> bookmarklet allows a user to quickly blog whichever web site he/she is currently viewing. </li><li> The <a href="https://web.archive.org/web/20130127231851/http://delicious.com/help/bookmarklets" class="external text" title="http://delicious.com/help/bookmarklets">delicious.com bookmarklets</a> allow a user to quickly post a link to his/her delicious.com bookmarks list. </li><li> <a href="https://web.archive.org/web/20130127231851/http://tantek.com/favelets/" class="external text" title="http://tantek.com/favelets/">Tantek's favelets</a> </li></ul> </li></ul> <a name="Boolean" id="Boolean"></a><h2> <span class="mw-headline">Boolean</span></h2> <p>A variable or expression which evaluates to either true or false. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://us2.php.net/manual/en/language.types.boolean.php" class="external text" title="http://us2.php.net/manual/en/language.types.boolean.php">PHP Boolean data type</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Category" id="Category"></a><h2> <span class="mw-headline"> Category </span></h2> <p>Each <a href="#Post" title="">post</a> in WordPress is filed under a <b>category</b>. Thoughtful categorization allows posts to be grouped with others of similar content and aids in the navigation of a site. Please note, the <i>post category</i> should not be confused with the <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Link_Categories" title="Administration Panels" class="mw-redirect">Link Categories</a> used to classify and manage <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Links_-_Putting_the_Inter_in_the_Internet" title="Administration Panels" class="mw-redirect">Links</a>. </p> <a name="Capabilities" id="Capabilities"></a><h2> <span class="mw-headline"> Capabilities </span></h2> <p>A <b>capability</b> is permission to perform one or more types of task. Each user of a WordPress site might have some permissions but not others, depending on their <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Role" title="Glossary">role</a>. For example, users who have the Author role usually have permission to edit their own posts (the <code>edit_posts</code> capability), but not permission to edit other users' posts (the <code>edit_others_posts</code> capability). WordPress comes with six roles and over fifty capabilities in its role-based access system. Plugins can modify the system. </p> <ul><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Roles_and_Capabilities" title="Roles and Capabilities">Roles and Capabilities</a> </li><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Role-based_access_control" class="external text" title="http://en.wikipedia.org/wiki/Role-based_access_control">Role-based access control</a> (Wikipedia) </li></ul> <a name="CGI" id="CGI"></a><h2> <span class="mw-headline">CGI</span></h2> <p><b>CGI</b> (Common Gateway Interface) is a specification for <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Server-side" class="external text" title="http://en.wikipedia.org/wiki/Server-side">server-side</a> communication scripts designed to transfer information between a Web server and a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Client-side" class="external text" title="http://en.wikipedia.org/wiki/Client-side">web-client (browser)</a>. Typically, <a href="#HTML" title="">HTML</a> pages that collect data via forms use <i>CGI</i> programming to process the form data once the client submits it. </p> <a name="Character_Entity" id="Character_Entity"></a><h2> <span class="mw-headline">Character Entity </span></h2> <p>A <b>character entity</b> is a method used to display <i>special characters</i> normally <i>reserved</i> for use in <a href="#HTML" title="">HTML</a>. For example, the <i>less than</i> (<b><</b>) and <i>greater than</i> (<b>></b>) are used as part the <a href="#HTML" title="">HTML</a> tag structure, so both symbols are <i>reserved</i> for that use. But, if you need to display those symbols on your site, you can use <i>character entities</i>. For example: </p> <dl><dd>use <b><code>&lt;</code></b>  for the less than (<) symbol </dd><dd>use <b><code>&gt;</code></b>  for the greater than (>) symbol </dd></dl> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Fun_Character_Entities" title="Fun Character Entities">Fun Character Entities</a> </li></ul> <p><span id="Character_set"></span> </p> <a name="Character_Set" id="Character_Set"></a><h2> <span class="mw-headline">Character Set </span></h2> <p>A <b>character set</b> is a collection of symbols (letters, numbers, punctuation, and special characters), when used together, represent meaningful words in a language. Computers use an encoding scheme so members of a character set are stored with a numeric value (e.g. 0=A, 1=B, 2=C, 3=D). In addition, a <a href="#Collation" title="">collation</a> determines the order (i.e alphabetic) to use when sorting the character set. </p><p>By default, WordPress uses the Unicode UTF-8 (<b>utf8</b>) character set for the <a href="/web/20130127231851/http://codex.wordpress.org/Database_Description" title="Database Description">WordPress MySQL database tables</a> created during the <a href="/web/20130127231851/http://codex.wordpress.org/Installing_WordPress" title="Installing WordPress">installation process</a>. Beginning with <a href="/web/20130127231851/http://codex.wordpress.org/Version_2.2" title="Version 2.2">Version 2.2</a>, the database character set (and collation) is defined in the <i>wp-config.php</i> file. Also note, the character set used for syndication feeds is set in the <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Reading" title="Administration Panels" class="mw-redirect">Settings</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Settings_Reading_SubPanel" title="Settings Reading SubPanel" class="mw-redirect">Reading</a> panel. </p> <ul><li> See also: <a href="#Collation" title="">collation</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Editing_wp-config.php" title="Editing wp-config.php">Editing wp-config.php</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Converting_Database_Character_Sets" title="Converting Database Character Sets">Converting Database Character Sets</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Character_set" class="external text" title="http://en.wikipedia.org/wiki/Character_set">Character set at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Unicode" class="external text" title="http://en.wikipedia.org/wiki/Unicode">Unicode at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/UTF-8" class="external text" title="http://en.wikipedia.org/wiki/UTF-8">UTF-8 at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://dev.mysql.com/doc/refman/5.0/en/charset-general.html" class="external text" title="http://dev.mysql.com/doc/refman/5.0/en/charset-general.html">Character sets and collation at MySQL</a> </li></ul> <a name="chmod" id="chmod"></a><h2> <span class="mw-headline"> chmod </span></h2> <p><b>chmod</b> is a <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a> <a href="#Shell" title="">shell</a> command used to change <a href="#Permissions" title="">permissions</a> on files. Its name is a contraction of "<b>ch</b>ange <b>mod</b>e." </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Changing_File_Permissions" title="Changing File Permissions">Changing File Permissions</a>, <a href="/web/20130127231851/http://codex.wordpress.org/UNIX_Shell_Skills" title="UNIX Shell Skills">UNIX Shell Skills</a>, <a href="/web/20130127231851/http://codex.wordpress.org/htaccess_for_subdirectories" title="htaccess for subdirectories">htaccess for subdirectories</a> </li></ul> <a name="Class" id="Class"></a><h2> <span class="mw-headline"> Class </span></h2> <p><b>Classes</b> are groupings of <a href="#CSS" title="">CSS</a> styles which can be applied to any <a href="#HTML" title="">HTML</a> element. For classes in PHP, see the <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Class#Computing" class="extiw" title="wikipedia:Class">Class (Computing)</a> article at Wikipedia and <a href="https://web.archive.org/web/20130127231851/http://php.net/manual/en/language.oop5.php" class="external text" title="http://php.net/manual/en/language.oop5.php">PHP Manual: Classes and Objects</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/CSS" title="CSS">CSS</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Blog_Design_and_Layout" title="Blog Design and Layout" class="mw-redirect">Blog Design and Layout</a> </li></ul> <a name="Collation" id="Collation"></a><h2> <span class="mw-headline"> Collation </span></h2> <p><b>Collation</b> refers to the order used to sort the letters, numbers, and symbols of a given <a href="#Character_set" title="">character set</a>. For example, because WordPress, by default, uses the UTF-8 (<b>utf8</b>) character set, and when the <a href="/web/20130127231851/http://codex.wordpress.org/Database_Description" title="Database Description">WordPress MySQL database tables</a> are created during the <a href="/web/20130127231851/http://codex.wordpress.org/Installing_WordPress" title="Installing WordPress">installation process</a>, MySQL assigns <b>utf8_general_ci</b> collation to those tables. Beginning with <a href="/web/20130127231851/http://codex.wordpress.org/Version_2.2" title="Version 2.2">Version 2.2</a>, the collation (and character set) used by WordPress is defined in the <i>wp-config.php</i> file. </p> <ul><li> See also: <a href="#Character_set" title="">Character set</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Editing_wp-config.php" title="Editing wp-config.php">Editing wp-config.php</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Converting_Database_Character_Sets" title="Converting Database Character Sets">Converting Database Character Sets</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Collation" class="external text" title="http://en.wikipedia.org/wiki/Collation">Collation at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Character_set" class="external text" title="http://en.wikipedia.org/wiki/Character_set">Character set at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/UTF-8" class="external text" title="http://en.wikipedia.org/wiki/UTF-8">UTF-8 at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://dev.mysql.com/doc/refman/5.0/en/charset-general.html" class="external text" title="http://dev.mysql.com/doc/refman/5.0/en/charset-general.html">Character sets and collation at MySQL</a> </li></ul> <a name="Comments" id="Comments"></a><h2> <span class="mw-headline"> Comments </span></h2> <p><b>Comments</b> are a feature of <a href="#Blog" title="">blogs</a> which allow readers to respond to <a href="#Post" title="">posts</a>. Typically readers simply provide their own thoughts regarding the <a href="#Content" title="">content</a> of the post, but users may also provide <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Hyperlink" class="external text" title="http://en.wikipedia.org/wiki/Hyperlink">links</a> to other resources, generate discussion, or simply compliment the author for a well-written post. </p><p>You can control and regulate comments by filters for language and content. Comments can be queued for approval before they are visible on the web site. This is useful in dealing with <a href="/web/20130127231851/http://codex.wordpress.org/Comment_Spam" title="Comment Spam">comment spam</a>. </p> <ul><li> See also: <a href="#Blog" title="">blog</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Plugins#Comment_Plugins" title="Plugins">Comment-related plugins</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Comment_Spam" title="Comment Spam">Dealing with comment spam</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Settings_Discussion_SubPanel" title="Settings Discussion SubPanel" class="mw-redirect">Settings Discussion SubPanel</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Hyperlink" class="external text" title="http://en.wikipedia.org/wiki/Hyperlink">Hyperlink at Wikipedia</a> </li></ul> <a name="Content" id="Content"></a><h2> <span class="mw-headline"> Content </span></h2> <p><b>Content</b> consists of text, images, or other information shared in <a href="#Post" title="">posts</a>. This is separate from the structural design of a web site, which provides a framework into which the content is inserted, and the presentation of a site, which involves graphic design. A <a href="#Content_Management_System" title="">Content Management System</a> changes and updates content, rather than the structural or graphic design of a web site. </p> <a name="Content_Management_System" id="Content_Management_System"></a><h2> <span class="mw-headline"> Content Management System </span></h2> <p>A <b>Content Management System</b>, or <b>CMS</b>, is software for facilitating the maintenance of <a href="#Content" title="">content</a>, but not design, on a web site. A <a href="#Blog" title="">blogging</a> tool is an example of a Content Management System. </p> <ul><li> See also: <a href="#Blog" title="">blog</a> </li></ul> <a name="cPanel" id="cPanel"></a><h2> <span class="mw-headline"> cPanel </span></h2> <p><b>cPanel</b> is a popular web-based administration tool that many <a href="#Hosting_provider" title="">hosting providers</a> provide to allow users to configure their own accounts using an easy-to-use interface. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_cPanel" title="Using cPanel">Using cPanel</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Using_Themes#Adding_New_Themes_by_using_cPanel" title="Using Themes">Adding New Themes by using cPanel</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://cpanel.net/" class="external text" title="http://cpanel.net/">cPanel website</a> </li></ul> <a name="CSS" id="CSS"></a><h2> <span class="mw-headline"> CSS </span></h2> <p><b>CSS</b>, or <b>Cascading Style Sheets</b>, is a <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/" class="external text" title="http://www.w3.org/">W3C</a> <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_standard" class="external text" title="http://en.wikipedia.org/wiki/Open_standard">open standards</a> programming language for specifying how a web page is presented. It allows web site designers to create formatting and layout for a web site independently of its content. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/CSS" title="CSS">CSS</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Blog_Design_and_Layout" title="Blog Design and Layout" class="mw-redirect">Blog Design and Layout</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/Style/CSS/" class="external text" title="http://www.w3.org/Style/CSS/">CSS at W3C</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_standard" class="external text" title="http://en.wikipedia.org/wiki/Open_standard">Open standards at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/" class="external text" title="http://www.w3.org/">W3C.org</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Dashboard" id="Dashboard"></a><h2> <span class="mw-headline"> Dashboard </span></h2> <p>In WordPress a <b>Dashboard</b> is the main administration screen for a site (a weblog), or for a network of sites. It summarizes information about the site or network, and also external information, in one or more <a href="#Widget" title="">widgets</a> that the Dashboard user can enable, disable, and move around. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Dashboard_Screen" title="Dashboard Screen">Dashboard Screen</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Database" id="Database"></a><h2> <span class="mw-headline"> Database </span></h2> <p>A <b>database</b> in computing terms is software used to manage information in an organized fashion. <a href="#WordPress" title="">WordPress</a> uses the <a href="#MySQL" title="">MySQL</a> relational database management system for storing and retrieving the content of your <a href="#Blog" title="">blog</a>, such as <a href="#Posts" title="">posts</a>, <a href="#Comments" title="">comments</a>, and so on. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Database_Description" title="Database Description">Database Description</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Backing_Up_Your_Database" title="Backing Up Your Database">Backing Up Your Database</a> </li></ul> <a name="Database_version" id="Database_version"></a><h2> <span class="mw-headline"> Database version </span></h2> <p>In WordPress, the <b>database version</b> is a number that increases every time changes are made to the way WordPress organizes the data in its <a href="#database" title="">database</a>. It is not the same as the version of the database software, <a href="#MySQL" title="">MySQL</a>. </p><p>For example, the database version in WordPress 3.3 was 19470, and the database version in WordPress 3.3.1 did not change. This tells anyone planning to use backed-up data from the older version that they do not need to check for changes in the structure of the data. </p><p>WordPress stores its database version in the database, as the option named <code>db_version</code> in every WordPress site's <code>wp_options</code> table. (The table name prefix <code>wp_</code> may be missing or different in some cases.) </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Database_Description" title="Database Description">Database Description</a>, <a href="/web/20130127231851/http://codex.wordpress.org/FAQ_Installation#How_do_you_force_a_database_upgrade.3F" title="FAQ Installation">How do you force a database upgrade?</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Default_theme" id="Default_theme"></a><h2> <span class="mw-headline"> Default theme </span></h2> <p>Every installation of WordPress has a <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Default_theme" title="Glossary">default theme</a>. The default theme is sometimes called the <b>fallback theme</b>, because if the active theme is for some reason lost or deleted, WordPress will fallback to using the default theme. </p><p>The WordPress default themes have been: </p> <ul><li> Up to <a href="/web/20130127231851/http://codex.wordpress.org/Version_2.9.2" title="Version 2.9.2">Version 2.9.2</a> the default theme was the WordPress Default theme (sometimes called Kubrick) and was located in the <i>wp-content/themes/default</i> folder. </li><li> <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.0" title="Version 3.0">Version 3.0</a> - the <a href="#Twenty_Ten_theme" title="">Twenty Ten theme</a> </li><li> <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.2" title="Version 3.2">Version 3.2</a> - the <a href="#Twenty_Eleven_theme" title="">Twenty Eleven theme</a> </li><li> <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.5" title="Version 3.5">Version 3.5</a> - the <a href="#Twenty_Twelve_theme" title="">Twenty Twelve theme</a> </li></ul> <ul><li> See also: <a href="#Twenty_Ten_theme" title="">Twenty Ten theme</a>, <a href="#Twenty_Eleven_theme" title="">Twenty Eleven theme</a>, <a href="#Twenty_Twelve_theme" title="">Twenty Twelve theme</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Child_Themes" title="Child Themes">Child Themes</a> </li></ul> <a name="Deprecated" id="Deprecated"></a><h2> <span class="mw-headline"> Deprecated </span></h2> <p><b>Deprecated</b> functions or template tags are no longer supported, and will soon be obsolete. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Category:Deprecated_Functions" title="Category:Deprecated Functions">"Deprecated Functions" Category</a> </li></ul> <a name="Developer" id="Developer"></a><h2> <span class="mw-headline"> Developer </span></h2> <p>A <b>developer</b>, or <b>dev</b>, is a computer programmer who is active in creating, modifying, and updating a software product. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Hacking_WordPress" title="Hacking WordPress">Hacking WordPress</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API" title="Plugin API">Plugin API</a> </li></ul> <a name="DIV" id="DIV"></a><h2> <span class="mw-headline"> DIV </span></h2> <p>A <b>DIV</b> element in <a href="#HTML" title="">HTML</a> marks a section of text. DIVs are used extensively in WordPress to apply <a href="#CSS" title="">CSS</a> stylings to particular <a href="#Blog" title="">blog</a> elements. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/CSS" title="CSS">CSS</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Blog_Design_and_Layout" title="Blog Design and Layout" class="mw-redirect">Blog Design and Layout</a> </li></ul> <a name="DNS" id="DNS"></a><h2> <span class="mw-headline"> DNS </span></h2> <p><b>DNS</b>, the domain name system, is the system that maps <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Domain_name" title="Glossary">domain names</a> to <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#IP_address" title="Glossary">IP addresses</a>. When you use a web browser to visit a website, your browser first extracts the site's domain name from the URL. Then it uses the DNS to find the IP address for that domain name. Then it connects to that IP address. </p> <ul><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Domain_Name_System" class="external text" title="http://en.wikipedia.org/wiki/Domain_Name_System">Domain Name System</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="DOM" id="DOM"></a><h2> <span class="mw-headline">DOM</span></h2> <p><b>DOM</b> (Document Object Model) is a standard, platform-independent interface that allows programmers to dynamically access HTML and XML to control the content and structure of documents. DOM connects programming scripts to web pages. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Document_Object_Model" class="external text" title="http://en.wikipedia.org/wiki/Document_Object_Model">DOM at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/DOM/" class="external text" title="http://www.w3.org/DOM/">DOM at W3C.org</a> </li></ul> <a name="Domain_name" id="Domain_name"></a><h2> <span class="mw-headline"> Domain name </span></h2> <p>A <b>domain name</b> is a name used for identification purposes on the Internet. In WordPress a domain name usually identifies a server where WordPress is installed. To make this work, the Internet's domain name system (<a href="/web/20130127231851/http://codex.wordpress.org/Glossary#DNS" title="Glossary">DNS</a>) maps the domain name to a server's <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#IP_address" title="Glossary">IP address</a>. For example, the domain name <code>example.com</code> maps to the IP address <code>192.0.43.10</code>. Many domain names can map to the same IP address, allowing a single server to run many websites. For example, the the domain names <code>www.example.com</code> and <code>example.net</code> also map to the IP address <code>192.0.43.10</code>. </p> <ul><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Domain_name" class="external text" title="http://en.wikipedia.org/wiki/Domain_name">Domain name</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Draft" id="Draft"></a><h2> <span class="mw-headline"> Draft </span></h2> <p>The <b>draft</b> <a href="#Post_status" title="">post status</a> is for WordPress <a href="#Post" title="">posts</a> which are saved, but as yet unpublished. A draft post can only be edited through the <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration Panel</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Write_Post_SubPanel" title="Write Post SubPanel">Write Post SubPanel</a> by <a href="/web/20130127231851/http://codex.wordpress.org/Authors_and_Users_SubPanel#Table_of_Authors" title="Authors and Users SubPanel" class="mw-redirect">users</a> of equal or greater <a href="/web/20130127231851/http://codex.wordpress.org/User_Levels" title="User Levels">User Level</a> than the <a href="/web/20130127231851/http://codex.wordpress.org/Authors_and_Users_SubPanel#Table_of_Registered_Users" title="Authors and Users SubPanel" class="mw-redirect">post's author</a>. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Excerpt" id="Excerpt"></a><h2> <span class="mw-headline"> Excerpt </span></h2> <p>An <b>excerpt</b> is a condensed description of your blog <a href="#Post" title="">post</a> and refers to the summary entered in the Excerpt field of the <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Add_New_Post" title="Administration Panels" class="mw-redirect">Posts</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Posts_Add_New_SubPanel" title="Posts Add New SubPanel" class="mw-redirect">Add New SubPanel</a>. The <i>excerpt</i> is used to describe your post in RSS feeds and is typically used in displaying search results. The <i>excerpt</i> is sometimes used in displaying the <b>Archives</b> and <a href="#Category" title="">Category</a> views of your posts. Use the <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags" title="Template Tags">Template Tag</a> <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags/the_excerpt" title="Template Tags/the excerpt" class="mw-redirect">the_excerpt()</a> to display the contents of this field. Note that if you do not enter information into the Excerpt field when writing a post, and you use <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags/the_excerpt" title="Template Tags/the excerpt" class="mw-redirect">the_excerpt()</a> in your theme template files, WordPress will automatically display the first 55 words of the <a href="#Post" title="">post</a>'s content. </p><p>An <i>excerpt</i> should not be confused with the <b>teaser</b>, which refers to words before the <code><span style="color: #000000"> </span> </code> in a <a href="#Post" title="">post's</a> content. When typing a long post you can insert the <code><span style="color: #000000"> </span> </code> <a href="/web/20130127231851/http://codex.wordpress.org/Posts_Add_New_SubPanel#Visual_Versus_HTML_Editor" title="Posts Add New SubPanel" class="mw-redirect">Quicktag</a> after a few sentences to act as a cut-off point. When the post is displayed, the <b>teaser</b>, followed by a hyperlink (such as <b>Read the rest of this entry...</b>), is displayed. Your visitor can then click on that link to see the full version of your <a href="#Post" title="">post</a>. The <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags" title="Template Tags">Template Tag</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Template_Tags/the_content" title="Template Tags/the content" class="mw-redirect">the_content()</a> should be used to display the teaser. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Customizing_the_Read_More" title="Customizing the Read More">Customizing the Read More</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Excerpt" title="Excerpt">Excerpt</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Feed" id="Feed"></a><h2> <span class="mw-headline"> Feed </span></h2> <p>A <b>feed</b> is a function of special software that allows "Feedreaders" to access a site automatically looking for new content and then posting the information about new content and updates to another site. This provides a way for users to keep up with the latest and hottest information posted on different blogging sites. Some Feeds include RSS (alternately defined as "Rich Site Summary" or "Really Simple Syndication"), Atom or RDF files. Dave Shea, author of the web design weblog <a href="https://web.archive.org/web/20130127231851/http://mezzoblue.com/" class="external text" title="http://mezzoblue.com">Mezzoblue</a> has written <a href="https://web.archive.org/web/20130127231851/http://www.mezzoblue.com/archives/2004/05/19/what_is_rssx/" class="external text" title="http://www.mezzoblue.com/archives/2004/05/19/what_is_rssx/">a comprehensive summary</a> of feeds. Feeds generally are based on <a href="#XML" title="">XML</a> technology. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Filter" id="Filter"></a><h2> <span class="mw-headline"> Filter </span></h2> <p>In WordPress code, a <b>filter</b> or <b>filter hook</b> is an identifier that can be used to modify certain data at a particular point in the code's execution. For example, a plugin or theme can associate a function with the filter <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API/Filter_Reference/the_content" title="Plugin API/Filter Reference/the content">the_content</a> in order to modify the content of every post just after it is retrieved from the database. </p> <ul><li> See also: <a href="#Action" title="">Action</a> </li></ul> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API#Filters" title="Plugin API">Filters</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API/Filter_Reference" title="Plugin API/Filter Reference">Filter Reference</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Function_Reference/add_filter" title="Function Reference/add filter">add_filter</a> function </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Footer_area" id="Footer_area"></a><h2> <span class="mw-headline"> Footer area </span></h2> <p>A <b>footer area</b> is a horizontal area provided by a <a href="#Theme" title="">theme</a> for displaying information other than the main <a href="#Content" title="">content</a> of the web page. Themes may provide one or more footer areas below the content. Footer areas usually contain <a href="#Widget" title="">widgets</a> that an administrator of the site can customize. </p><p>In a theme, footer areas are generated by a <a href="#Template" title="">template</a> file, typically named <code>sidebar-footer.php</code>. </p> <ul><li> See also: <a href="#Sidebar" title="">sidebar</a> </li></ul> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Templates" title="Templates">Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Customizing_Your_Sidebar" title="Customizing Your Sidebar">Customizing Your Sidebar</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Stepping_Into_Templates" title="Stepping Into Templates">Stepping Into Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Template_Hierarchy" title="Template Hierarchy">Template Hierarchy</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Front_End" id="Front_End"></a><h2> <span class="mw-headline">Front End</span></h2> <p>The front end is what your visitors see and interact with when they come to your website, www.YourSite.com. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="FTP" id="FTP"></a><h2> <span class="mw-headline"> FTP </span></h2> <p><b>FTP</b>, or <b>File Transfer Protocol</b>, is rather predictably, a client-server protocol for transferring files. It is one way to download files, and the most common way to upload files to a server. </p><p>An FTP <i>client</i> is a program which can download files from, or upload files to, an FTP <i>server</i>. </p><p>You may need to use an FTP client to upload your WordPress files to your <a href="#Web_server" title="">web server</a>, particularly if you use a <a href="#Hosting_provider" title="">hosting provider</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/FTP_Clients" title="FTP Clients">FTP Clients</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Uploading_WordPress_to_a_remote_host" title="Uploading WordPress to a remote host">Uploading WordPress to a remote host</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Using_FileZilla" title="Using FileZilla">Using FileZilla</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Gallery" id="Gallery"></a><h2> <span class="mw-headline"> Gallery </span></h2> <p>As defined by Andy Skelton, <b>Gallery</b>, introduced with <a href="/web/20130127231851/http://codex.wordpress.org/Version_2.5" title="Version 2.5">WordPress 2.5</a>, is specifically an exposition of images attached to a post. In that same vein, an upload is "attached to a post" when you upload it while editing a post. </p><p>In the uploader there is a "Gallery" tab that shows all the uploads attached to the post you are editing. When you have more than one attachment in a post, you should see at the bottom of the Gallery tab a button marked "Insert gallery". That button inserts a shortcode "[gallery]" into the post. WordPress replaces that shortcode with an exposition of all images attached to that post. Non-image file types are excluded from the gallery. </p><p>Note: If you don't see the "Insert gallery" button, it may be because you have not attached two images to the post. </p><p>The pretty URLs for attachments are made only after you have published the post and should be composed as the post <a href="#permalink" title="">permalink</a> plus the attachment <a href="#slug" title="">slug</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Gallery_Shortcode" title="Gallery Shortcode">Gallery Shortcode</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Shortcode_API" title="Shortcode API">Shortcode API</a> </li></ul> <a name="gettext" id="gettext"></a><h2> <span class="mw-headline"> gettext </span></h2> <p>The <b>gettext</b> system is a set of tools and standards for language translation, used by WordPress to provide versions in many languages. In WordPress a text string for translation may have a domain and a context. For example, a plugin might specify its own domain for translations, and a context might help translators to provide different translations of the same English word or phrase in different parts of the user interface. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/WordPress_in_Your_Language" title="WordPress in Your Language">WordPress in Your Language</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Translating_WordPress" title="Translating WordPress">Translating WordPress</a>, <a href="/web/20130127231851/http://codex.wordpress.org/I18n_for_WordPress_Developers" title="I18n for WordPress Developers">I18n for WordPress Developers</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Gettext" class="extiw" title="wikipedia:Gettext">gettext</a> (Wikipedia), <a href="https://web.archive.org/web/20130127231851/http://www.gnu.org/software/gettext/gettext.html" class="external text" title="http://www.gnu.org/software/gettext/gettext.html">GNU gettext</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="GMT" id="GMT"></a><h2> <span class="mw-headline"> GMT </span></h2> <p><b>GMT</b> ("Greenwich Mean Time", the time at the Royal Observatory in Greenwich, England) is the old name of the time zone from which all other time zones were measured. It has been replaced by <a href="#UTC" title="">UTC</a> ("Universal Time, Coordinated"), but for most practical purposes UTC and GMT are the same, so the term GMT is still commonly used. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Greenwich_Mean_Time" class="external text" title="http://en.wikipedia.org/wiki/Greenwich_Mean_Time">Greenwich Mean Time</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Time_zone" class="external text" title="http://en.wikipedia.org/wiki/Time_zone">Time zone</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Coordinated_Universal_Time" class="external text" title="http://en.wikipedia.org/wiki/Coordinated_Universal_Time">UTC</a> (Wikipedia) </li></ul> <a name="Gravatar" id="Gravatar"></a><h2> <span class="mw-headline"> Gravatar </span></h2> <p>A <b>gravatar</b> is a globally recognized <a href="#Avatar" title="">avatar</a> (a graphic image or picture that represents a user). Typically a user's gravatar is associated with their email address, and using a service such as <a href="https://web.archive.org/web/20130127231851/http://en.gravatar.com/" class="external text" title="http://en.gravatar.com/">Gravatar.com</a>, a blog owner to can configure their blog so that a user's gravatar is displayed along with their comments. </p> <ul><li> <a href="/web/20130127231851/http://codex.wordpress.org/How_to_Use_Gravatars_in_WordPress" title="How to Use Gravatars in WordPress">How to Use Gravatars in WordPress</a> </li><li> See also: <a href="#Avatar" title="">avatar</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Gravatars" title="Using Gravatars">Using Gravatars</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Gravatar" class="external text" title="http://en.wikipedia.org/wiki/Gravatar">Gravatar at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Hack" id="Hack"></a><h2> <span class="mw-headline"> Hack </span></h2> <p>A <b>hack</b> is a bit of code written to customize or extend the functionality of a software product. Older versions of WordPress used a hack-based extension system, but versions <a href="/web/20130127231851/http://codex.wordpress.org/Changelog/1.2" title="Changelog/1.2">1.2</a> and above of WordPress use a <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API" title="Plugin API">plugin API</a> with hooks for extensions. </p> <ul><li> See also: <a href="#Hacking" title="">hacking</a>, <a href="#Plugin" title="">plugin</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Changelog" title="Changelog" class="mw-redirect">Changelog</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Hacking_WordPress" title="Hacking WordPress">Hacking WordPress</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API" title="Plugin API">Plugin API</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">Open source at Wikipedia</a> </li></ul> <a name="Hacking" id="Hacking"></a><h2> <span class="mw-headline"> Hacking </span></h2> <p><b>Hacking</b> is the process of writing code for, or contributing code to, a piece of software. </p><p>There is some controversy surrounding the meaning of this term. It began as a benign term meaning "to exercise proficiency" or "to alter or improve," but the popular media have since construed it to mean "to break into a computer system, usually with malicious intent." Many in the computer industry have recently begun trying to 'take back' the word from its popular mutation, and many have adopted the term <i>cracking</i> to replace the malicious interpretation. Because of the desire to reclaim the word, you will often find the term used in conjunction with <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a> projects, intended in its benign form. For more information about the history of the term, please see <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Hacker" class="external text" title="http://en.wikipedia.org/wiki/Hacker">Wikipedia's article on <i>Hacker</i></a>. </p> <ul><li> See also: <a href="#Hack" title="">hack</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Hacking_WordPress" title="Hacking WordPress">Hacking WordPress</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Plugins" title="Plugins">Plugins</a> </li></ul> <a name="Hook" id="Hook"></a><h2> <span class="mw-headline"> Hook </span></h2> <p>In WordPress code a <b>hook</b> is an <a href="#Action" title="">action</a> or a <a href="#Filter" title="">filter</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Plugin_API#Hooks.2C_Actions_and_Filters" title="Plugin API">Hooks, Actions and Filters</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Hosting_provider" id="Hosting_provider"></a><h2> <span class="mw-headline"> Hosting provider </span></h2> <p>A <b>hosting provider</b> is a company or organization which provides, usually for a fee, infrastructure for making information accessible via the web. This involves the use of a <a href="#Web_server" title="">web server</a> (including web server software such as <a href="#Apache" title="">Apache</a>), and may involve one or more related technologies, such as <a href="#FTP" title="">FTP</a>, <a href="#PHP" title="">PHP</a>, <a href="#MySQL" title="">MySQL</a>, and operating system software such as <a href="#Linux" title="">Linux</a> or <a href="#Unix" title="">Unix</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Hosting_WordPress" title="Hosting WordPress">Hosting WordPress</a> </li></ul> <a name=".htaccess" id=".htaccess"></a><h2> <span class="mw-headline"> .htaccess </span></h2> <p>A <b>.htaccess</b> file is a granular configuration file for the <a href="#Apache" title="">Apache</a> <a href="#Web_server" title="">web server</a> software, used to set or alter the server's configuration settings for the directory in which it is present, and/or its child directories. </p><p>WordPress uses an <code>.htaccess</code> file in conjunction with the <a href="#mod_rewrite" title="">mod_rewrite</a> <a href="#Apache" title="">Apache</a> module to produce <a href="#Permalink" title="">permalinks</a>. </p><p>Note that <code>.htaccess</code> is a <i>hidden file</i> in <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a> (as dictated by the preceding period '.'), meaning it may not be visible using the default settings of some <a href="/web/20130127231851/http://codex.wordpress.org/FTP_Clients" title="FTP Clients">FTP clients</a>. </p> <ul><li> See also: <a href="#chmod" title="">chmod</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/htaccess_for_subdirectories" title="htaccess for subdirectories">htaccess for subdirectories</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Using_Permalinks" title="Using Permalinks">Using Permalinks</a>, <a href="/web/20130127231851/http://codex.wordpress.org/UNIX_Shell_Skills" title="UNIX Shell Skills">UNIX Shell Skills</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Changing_File_Permissions" title="Changing File Permissions">Changing File Permissions</a> </li></ul> <a name="HTML" id="HTML"></a><h2> <span class="mw-headline"> HTML </span></h2> <p><b>HTML</b>, or <b>Hypertext Markup Language</b>, is the <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/" class="external text" title="http://www.w3.org">W3C</a> standard language with which all web pages are built. It is the predecessor to <a href="#XHTML" title="">XHTML</a>, but HTML is often still used to describe either one. It is often used in conjunction with <a href="#CSS" title="">CSS</a> and/or <a href="#JavaScript" title="">JavaScript</a>. </p><p>WordPress strives to conform to the <a href="#XHTML" title="">XHTML</a> standard. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/TR/html4/" class="external text" title="http://www.w3.org/TR/html4/">HTML 4.01 Specification</a>, <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/" class="external text" title="http://www.w3.org">W3C org</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="IP_address" id="IP_address"></a><h2> <span class="mw-headline"> IP address </span></h2> <p>An <b>IP address</b> is a unique number (e.g. <b><code>70.84.29.148</code></b>) assigned to a computer (or other internet-capable information appliance, such as a network printer) to enable it to communicate with other devices using the <i>Internet Protocol</i>. It is a computer's identity on the internet, and every computer connected to the internet is assigned at least one — although the methods of assigning these addresses, and the permanence and duration of their assignment, differ according to the use of the computer and the circumstances of its internet use. </p><p>Every <a href="#Web_server" title="">web server</a> is assigned an IP address as well, but often times <a href="#Hosting_provider" title="">hosting providers</a> will assign multiple IP addresses to one computer, in the event that multiple web sites reside on the same physical server. This is the case with most inexpensive 'managed' or 'group' hosting packages. </p><p><a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Domain_name" title="Glossary">Domain names</a> were created to provide an easier means of accessing internet resources than IP addresses, which are cumbersome to type and difficult to remember. Every domain name has at least one corresponding IP address, but only a small number of IP addresses have a domain name associated with them, since only computers that are servers require domain names. The domain name system (<a href="/web/20130127231851/http://codex.wordpress.org/Glossary#DNS" title="Glossary">DNS</a>) is what maps domain names to IP addresses. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/IP_address" class="external text" title="http://en.wikipedia.org/wiki/IP_address">IP address</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="ISAPI" id="ISAPI"></a><h2> <span class="mw-headline">ISAPI</span></h2> <p><b>ISAPI</b> (Internet Server Application Programming Interface) is a set of programming standards designed to allow programmers to quickly and easily develop efficient Web-based applications. Developed by Process Software and Microsoft Corporation, <i>ISAPI</i> is intended to replace <a href="#CGI" title="">CGI</a> programs. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/ISAPI" class="external text" title="http://en.wikipedia.org/wiki/ISAPI">ISAPI at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="JavaScript" id="JavaScript"></a><h2> <span class="mw-headline"> JavaScript </span></h2> <p><b>JavaScript</b> is a programming language that WordPress uses to make certain processing occur in your web browser when it is inconvenient or impossible for the server to do that processing. For example, when you reply to a comment in a WordPress blog, WordPress uses JavaScript to move the comment form inside the comment you are replying to. </p> <ul><li> See also: <a href="#AJAX" title="">AJAX</a>, <a href="#HTML" title="">HTML</a>, <a href="#XHTML" title="">XHTML</a> </li><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Javascript" title="Using Javascript">Using Javascript</a> </li><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Javascript" class="external text" title="http://en.wikipedia.org/wiki/Javascript">JavaScript</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Linux" id="Linux"></a><h2> <span class="mw-headline"> Linux </span></h2> <p><b>Linux</b> is an <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a> computer operating system, created by Linus Torvalds, similar in style to <a href="#Unix" title="">Unix</a>. It is popular in <a href="#Web_server" title="">web server</a> and other high-performance computing environments, and has recently begun to gain popularity in workstation environments as well. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.shortopedia.com/L/I/Linux" class="external text" title="http://www.shortopedia.com/L/I/Linux">Linux at Shortopedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="Mac_OS_X" id="Mac_OS_X"></a><h2> <span class="mw-headline"> Mac OS X </span></h2> <p><b><a href="https://web.archive.org/web/20130127231851/http://www.apple.com/macosx/" class="external text" title="http://www.apple.com/macosx/">Mac OS X</a></b> is an operating system specifically for modern Macintosh computers. The operating system was first commercially released in 2001. It consists of two main parts: Darwin, an open source <a href="#Unix" title="">Unix</a>-like environment which is based on the BSD source tree and the Mach microkernel, adapted and further developed by Apple Computer with involvement from independent developers; and a proprietary GUI named Aqua, developed by Apple. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/UNIX_Shell_Skills" title="UNIX Shell Skills">UNIX Shell Skills</a> </li></ul> <a name="Meta" id="Meta"></a><h2> <span class="mw-headline"> Meta </span></h2> <p><b>Meta</b> has several meanings, but generally means <b>information about</b>. In WordPress, <i>meta</i> usually refers to <b>administrative</b> type information. As described in <a href="/web/20130127231851/http://codex.wordpress.org/Meta_Tags_in_WordPress" title="Meta Tags in WordPress">Meta Tags in WordPress</a>, <i>meta</i> is the <a href="#HTML" title="">HTML</a> tag used to describe and define a web page to the outside world (search engines). In the article <a href="/web/20130127231851/http://codex.wordpress.org/Post_Meta_Data_Section" title="Post Meta Data Section">Post Meta Data</a>, <i>meta</i> refers to information associated with each <strong class="selflink">post</strong>, such as the author's name and the date posted. <a href="/web/20130127231851/http://codex.wordpress.org/Codex:Guidelines#Meta_Rules" title="Codex:Guidelines">Meta Rules</a> define the general protocol to follow in using the Codex. Also, many WordPress based sites offer a <i>Meta</i> section, usually found in the sidebar, with links to login or register at that site. Finally, <i>Meta</i> is a <a href="https://web.archive.org/web/20130127231851/http://www.mediawiki.org/" class="external text" title="http://www.mediawiki.org">MediaWiki</a> <a href="https://web.archive.org/web/20130127231851/http://meta.wikimedia.org/wiki/Namespace" class="external text" title="http://meta.wikimedia.org/wiki/Namespace">namespace</a> that refers to administrative functions within Codex. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Meta-" class="external text" title="http://en.wikipedia.org/wiki/Meta-">Wikipedia's Article on Meta</a> </li></ul> <a name="Microformats" id="Microformats"></a><h2> <span class="mw-headline"> Microformats </span></h2> <p><b>Microformats</b> provide a way for programs to read certain information in web pages without making the pages look any different to humans. For example, a web page displaying a user's profile could use microformats to make it easy for a program to extract the user's contact information so that it can be added to an address book in a single operation. In WordPress, some <a href="#theme" title="">themes</a> and <a href="#plugin" title="">plugins</a> support some microformats. </p> <ul><li> Related: <a href="https://web.archive.org/web/20130127231851/http://wordpress.org/extend/themes/tags/microformats" class="external text" title="http://wordpress.org/extend/themes/tags/microformats">Themes</a> and <a href="https://web.archive.org/web/20130127231851/http://wordpress.org/extend/plugins/tags/microformats" class="external text" title="http://wordpress.org/extend/plugins/tags/microformats">plugins</a> providing microformats support </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://microformats.org/" class="external text" title="http://microformats.org/">Microformats.org</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Moblogging" id="Moblogging"></a><h2> <span class="mw-headline"> Moblogging </span></h2> <p><b>Moblogging</b> is the act of posting to one's <a href="#Blog" title="">blog</a> via a mobile device, e.g. mobile phone, smartphone, or Blackberry. It is pronounced as <code>mōbə-logging</code> or <code>mōb-logging</code>, or sometimes as <code>mŏb-logging</code> in reference to <i>smart mobs</i>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Weblog_Client#Mobile" title="Weblog Client">Moblog Clients</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Post_to_your_blog_using_email" title="Post to your blog using email">Post to your blog using email</a> </li></ul> <a name="mod_rewrite" id="mod_rewrite"></a><h2> <span class="mw-headline"> mod_rewrite </span></h2> <p><b>mod_rewrite</b> is an extension module of the <a href="#Apache" title="">Apache</a> <a href="#Web_server" title="">web server</a> software which allows for "rewriting" of <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Url" class="external text" title="http://en.wikipedia.org/wiki/Url">URLs</a> on-the-fly. Rewrite <i>rules</i> use <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Regular_expression" class="external text" title="http://en.wikipedia.org/wiki/Regular_expression">regular expressions</a> to parse the requested URL from the client, and translate it into a different URL before interpretation. </p><p>WordPress uses <code>mod_rewrite</code> for its <a href="#Permalink" title="">permalink</a> structure, and also for <a href="#Multisite" title="">multisite</a> networks, which are both optional functionality. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Permalinks" title="Using Permalinks">Using Permalinks</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Create_A_Network" title="Create A Network">Create A Network</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Multisite" id="Multisite"></a><h2> <span class="mw-headline">Multisite</span></h2> <p><b>Multisite</b> is a feature of <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.0" title="Version 3.0">WordPress 3.0</a> and later versions that allows multiple virtual <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Site" title="Glossary">sites</a> to share a single WordPress installation. When the multisite feature is activated, the original WordPress site can be converted to support a <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Network" title="Glossary">network</a> of sites. </p> <ul><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Create_A_Network" title="Create A Network">Create A Network</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="MySQL" id="MySQL"></a><h2> <span class="mw-headline"> MySQL </span></h2> <p><b>MySQL</b> is a popular <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a> SQL (Structured Query Language) database implementation, available for many platforms, including Windows, <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a> and <a href="#Mac_OS_X" title="">Mac OS X</a>. </p><p>WordPress requires a MySQL database to store all <a href="#Blog" title="">blog</a> information, including <a href="#Post" title="">posts</a>, <a href="#Comments" title="">comments</a>, <a href="#Meta" title="">metadata</a>, and other information. </p><p>WordPress also works with MySQL-compatible databases such as MariaDB and Percona Server. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Database_Description" title="Database Description">Database Description</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://mysql.com/" class="external text" title="http://mysql.com/">MySQL</a>, <a href="https://web.archive.org/web/20130127231851/http://mariadb.org/" class="external text" title="http://mariadb.org/">MariaDB</a>, <a href="https://web.archive.org/web/20130127231851/http://www.percona.com/software/percona-server/" class="external text" title="http://www.percona.com/software/percona-server/">Percona Server</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Navigation" id="Navigation"></a><h2> <span class="mw-headline">Navigation</span></h2> <p>Navigation is the term used to describe text on a page that, when selected, redirects you to a corresponding page elsewhere on the website. Navigation may sometimes be referred to as the menu, links and hyperlinks. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Network" id="Network"></a><h2> <span class="mw-headline">Network</span></h2> <p>In the WordPress user interface, a <b>network</b> is a collection of separate <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Site" title="Glossary">sites</a> created in a single WordPress installation by the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Multisite" title="Glossary">multisite</a> feature. The sites in a WordPress network are not interconnected like the things in other kinds of networks. They are very like the separate blogs at WordPress.com. </p><p>In WordPress code the network is known as the <i>site</i> and the sites are known as <i>blogs</i>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Create_A_Network" title="Create A Network">Create A Network</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="News_reader" id="News_reader"></a><h2> <span class="mw-headline"> News reader </span></h2> <p>A <b>news aggregator</b> or <b>news (feed) reader</b> is a computer program which tracks syndicated information <a href="#Feed" title="">feeds</a>, via <a href="#RSS" title="">RSS</a>, <a href="#RDF" title="">RDF</a>, or <a href="#Atom" title="">Atom</a>. Most news aggregators allow one to 'subscribe' to a feed, and automatically keep track of the articles one has read, similar to an email client tracking read emails. </p><p>Many <a href="#Blog" title="">blogs</a> make their content available in <a href="#Feed" title="">feed</a> form for the convenience of readers using news aggregators. WordPress can generate feeds in <a href="#RSS" title="">RSS</a> and/or <a href="#Atom" title="">Atom</a> formats. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/News_aggregator" class="external text" title="http://en.wikipedia.org/wiki/News_aggregator">News aggregator at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="Open_Source" id="Open_Source"></a><h2> <span class="mw-headline"> Open Source </span></h2> <p><b>Open source</b> is simply programming code that can be read, viewed, modified, and distributed, by anyone who desires. WordPress is distributed under an <i>open source</i> <a href="https://web.archive.org/web/20130127231851/http://www.gnu.org/copyleft/gpl.html" class="external text" title="http://www.gnu.org/copyleft/gpl.html">GNU General Public License (GPL)</a>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/GPL" title="GPL">GPL</a>, <a href="/web/20130127231851/http://codex.wordpress.org/License" title="License">License</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.opensource.org/" class="external text" title="http://www.opensource.org/">Open Source Initiative</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">Open Source at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Source_code" class="external text" title="http://en.wikipedia.org/wiki/Source_code">Source Code at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Output_Compression" id="Output_Compression"></a><h2> <span class="mw-headline"> Output Compression </span></h2> <p><b>Output Compression</b> is the removal of white spaces, carriage returns, new lines and tabs from your HTML document. This reduces the file size of the HTML document without changing the functionality. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Output_Compression" title="Output Compression">Output Compression</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Page" id="Page"></a><h2> <span class="mw-headline"> Page </span></h2> <p>A <b>Page</b> is often used to present "static" information about yourself or your site. A good example of a Page is information you would place on an About Page. A Page should not be confused with the time-oriented objects called <a href="#Post" title="">posts</a>. Pages are typically "timeless" in nature and live "outside" your blog. </p><p>The word "page" has long been used to describe any HTML document on the web. In WordPress, however, "Page" refers to a very specific feature first introduced in WordPress version 1.5. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Pages" title="Pages">Pages</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Write_Page_SubPanel" title="Write Page SubPanel">Write Page SubPanel</a> </li></ul> <a name="Perl" id="Perl"></a><h2> <span class="mw-headline"> Perl </span></h2> <p><b>Perl</b> is an acronym for <b>Practical Extraction and Report Language</b>, but it's most commonly spelled as a proper name. It's a very popular and powerful scripting language used for web applications, although its use is being largely replaced by <a href="#PHP" title="">PHP</a> in the mainstream. One of its strengths lies in its speedy and effective use of <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Regular_expression" class="external text" title="http://en.wikipedia.org/wiki/Regular_expression">regular expressions</a>. Its unofficial motto is, "There's More Than One Way To Do It," or "TMTOWTDI," owing to the extreme flexibility of the syntax. </p><p>WordPress does not use Perl, and it is therefore not required. </p> <a name="Permalink" id="Permalink"></a><h2> <span class="mw-headline"> Permalink </span></h2> <p>A <b>permalink</b> is a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Url" class="external text" title="http://en.wikipedia.org/wiki/Url">URL</a> at which a resource or article will be permanently stored. Many pages driven by <a href="#Content_Management_System" title="">Content Management Systems</a> contain excerpts of content which is frequently rotated, making linking to bits of information within them a game of chance. Permalinks allow users to bookmark full articles at a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Url" class="external text" title="http://en.wikipedia.org/wiki/Url">URL</a> they know will never change, and will always present the same content. </p><p>Permalinks are optional in WordPress, but are highly recommended as they greatly increase the cleanliness of <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Url" class="external text" title="http://en.wikipedia.org/wiki/Url">URL</a>. WordPress uses the <a href="#Apache" title="">Apache</a> module <code><a href="#mod_rewrite" title="">mod_rewrite</a></code> to implement its permalink system. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Permalinks" title="Using Permalinks">Using Permalinks</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Url" class="external text" title="http://en.wikipedia.org/wiki/Url">URL at Wikipedia</a> </li></ul> <a name="Permissions" id="Permissions"></a><h2> <span class="mw-headline"> Permissions </span></h2> <p><b>Permissions</b> are security settings restricting or allowing users to perform certain functions. In the case of files on <a href="#Unix" title="">Unix</a> or <a href="#Linux" title="">Linux</a> systems, there are three types of permissions: <i>read</i>, <i>write</i>, and <i>execute</i>. In the case of <a href="#MySQL" title="">MySQL</a> databases, there are many more: <code>SELECT</code>, <code>INSERT</code>, <code>UPDATE</code>, <code>DELETE</code>, etc. — although MySQL refers to them as <i>privileges</i>. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Changing_File_Permissions" title="Changing File Permissions">Changing File Permissions</a> </li></ul> <a name="PHP" id="PHP"></a><h2> <span class="mw-headline"> PHP </span></h2> <p><b>PHP</b> is a recursive acronym for <b>PHP: Hypertext Preprocessor</b>. It is a popular server-side scripting language designed specifically for integration with <a href="#HTML" title="">HTML</a>, and is used (often in conjunction with <a href="#MySQL" title="">MySQL</a>) in <a href="#Content_Management_System" title="">Content Management Systems</a> and other web applications. It is available on many platforms, including Windows, <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a> and <a href="#Mac_OS_X" title="">Mac OS X</a>, and is <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a> software. </p><p>WordPress is written using PHP and requires it for operation. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Hacking_WordPress" title="Hacking WordPress">Hacking WordPress</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://php.net/" class="external text" title="http://php.net/">PHP Website</a>, <a href="https://web.archive.org/web/20130127231851/http://www.digital-web.com/articles/php_for_designers/" class="external text" title="http://www.digital-web.com/articles/php_for_designers/">PHP for Designers</a> — by WordPress lead <a href="#Developer" title="">developer</a> <a href="/web/20130127231851/http://codex.wordpress.org/User:Matt" title="User:Matt">Matthew Mullenweg</a>, <a href="https://web.archive.org/web/20130127231851/http://onlamp.com/php/" class="external text" title="http://onlamp.com/php/">PHP at OnLAMP</a> </li></ul> <a name="phpMyAdmin" id="phpMyAdmin"></a><h2> <span class="mw-headline"> phpMyAdmin </span></h2> <p><b>phpMyAdmin</b> is a popular, powerful web-based interface for administering <a href="#MySQL" title="">MySQL</a> databases. It is <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Open_source" class="external text" title="http://en.wikipedia.org/wiki/Open_source">open source</a>, written in <a href="#PHP" title="">PHP</a>, and is among the better tools available for working with <a href="#MySQL" title="">MySQL</a> databases. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/phpMyAdmin" title="phpMyAdmin">phpMyAdmin</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.phpmyadmin.net/home_page/" class="external text" title="http://www.phpmyadmin.net/home_page/">phpMyAdmin web site</a> </li></ul> <a name="Ping" id="Ping"></a><h2> <span class="mw-headline"> Ping </span></h2> <p>Within the WordPress interface, "ping" is sometimes used to refer to <a href="#Pingback" title="">Pingbacks</a> and <a href="#Trackback" title="">Trackbacks</a>. </p><p>In general computer terms, "ping" is a common utility used in a TCP/IP environment to determine if a given <a href="#IP_address" title="">IP Address</a> exists or is reachable. Typically, Ping is used to diagnose a network connection problem. Many times you will be asked, "Can you ping that address?". That means, does the Ping utility return a success message trying to reach the "problem" <a href="#IP_address" title="">IP Address</a>? </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Ping" class="external text" title="http://en.wikipedia.org/wiki/Ping">Ping at Wikipedia</a> </li></ul> <a name="Pingback" id="Pingback"></a><h2> <span class="mw-headline"> Pingback </span></h2> <p><b>Pingback</b> lets you notify the author of an article if you link to his article (article on a blog, of course). If the links you include in an article you write on a blog lead to a blog which is pingback-enabled, then the author of that blog gets a notification in the form of a pingback that you linked to his article. </p><p>If you're feeling <i>really</i> geeky you may want to check out the <a href="https://web.archive.org/web/20130127231851/http://hixie.ch/specs/pingback/pingback" class="external text" title="http://hixie.ch/specs/pingback/pingback">Pingback technical specification</a> or <a href="https://web.archive.org/web/20130127231851/http://lists.automattic.com/pipermail/wp-hackers/2009-September/027425.html" class="external text" title="http://lists.automattic.com/pipermail/wp-hackers/2009-September/027425.html">Otto's "How Pingbacks Work" explanation</a>. </p> <ul><li> See also: <a href="#Trackback" title="">trackback</a> </li><li> Related articles: [<a href="https://web.archive.org/web/20130127231851/http://codex.wordpress.org/Introduction_to_Blogging#Pingbacks|Introduction" class="external text" title="http://codex.wordpress.org/Introduction_to_Blogging#Pingbacks|Introduction">to Blogging: Pingbacks</a>] </li></ul> <a name="Plugin" id="Plugin"></a><h2> <span class="mw-headline"> Plugin </span></h2> <p>A <b>Plugin</b> is a group of php functions that can extend the functionality present in a standard WordPress weblog. These functions may all be defined in one php file, or may be spread among more than one file. Usually, a plugin is a php file that can be uploaded to the "wp-content/plugins" directory on your webserver, where you have installed WordPress. Once you have uploaded the plugin file, you should be able to "turn it on" or Enable it from the "Plugins" page in the administration interface of your weblog. The WordPress source code contains hooks that can be used by plugins. </p> <ul><li> See also: <a href="#Hack" title="">hack</a>, <a href="#Hacking" title="">hacking</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Plugins" title="Plugins">Plugins</a> </li></ul> <a name="Port" id="Port"></a><h2> <span class="mw-headline"> Port </span></h2> <p>Within the context of the WordPress community, a <b>port</b> is a bit of code that has been rewritten to be compatible with WordPress. For example, if someone wrote a plugin for MoveableType, WordPress users may want to find a port of that plugin for WordPress. Port can also be used as a verb: to rewrite a piece of software for a different platform/language. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Porting" class="external text" title="http://en.wikipedia.org/wiki/Porting">Porting at Wikipedia</a> </li></ul> <a name="Post" id="Post"></a><h2> <span class="mw-headline">Post</span></h2> <p>Also known as “articles” and sometimes incorrectly referred to as “blogs”. In WordPress, “posts” are articles that you write to populate your blog. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Post_Slug" id="Post_Slug"></a><h2> <span class="mw-headline"> Post Slug </span></h2> <p>A few words describing an entry, for use in permalinks (replaces the %posttitle% field therein), especially useful if titles tend to be long or they change frequently. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Post_Status" id="Post_Status"></a><h2> <span class="mw-headline"> Post Status </span></h2> <p>The status of a post, as set in the <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration Panel</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Write_Post_SubPanel" title="Write Post SubPanel">Write Post SubPanel</a> is either: <b>Published</b> (viewable by everyone), <b>Draft</b> (incomplete post viewable by anyone with proper <a href="/web/20130127231851/http://codex.wordpress.org/User_Levels" title="User Levels">user level</a>), or <b>Private</b> (viewable only to WordPress users at Administrator level). </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Post_Status" title="Post Status">Post Status</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Post_Type" id="Post_Type"></a><h2> <span class="mw-headline"> Post Type </span></h2> <p>Post type refers to the various structured data that is maintained in the WordPress posts table. Native (or built-in) registered post types are <b>post</b>, <b>page</b>, <b>attachment</b>, <b>revision</b>, and <b>nav-menu-item</b>. Custom post types are also supported in WordPress and can be defined with <a href="/web/20130127231851/http://codex.wordpress.org/Function_Reference/register_post_type" title="Function Reference/register post type">register_post_type()</a>. Custom post types allow users to easily create and manage such things as portfolios, projects, video libraries, podcasts, quotes, chats, and whatever a user or developer can imagine. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Post_Types" title="Post Types">Post Types</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Query_string" id="Query_string"></a><h2> <span class="mw-headline"> Query string </span></h2> <p>A sequence of codes in a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Uniform_Resource_Identifier" class="external text" title="http://en.wikipedia.org/wiki/Uniform_Resource_Identifier">Uniform Resource Identifier (URI)</a> that a web page uses to determine what dynamic data to display. The query string in a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Uniform_Resource_Identifier" class="external text" title="http://en.wikipedia.org/wiki/Uniform_Resource_Identifier">URI</a> comes after an initial question mark, and may contain several parameters separated by ampersands. WordPress uses query strings to indicate criteria to search for specific posts or sets of posts in the database. The use of query strings is generally believed to impede the indexing of dynamic pages by search engines. For this reason, it is often desirable to use a method such as <a href="#mod_rewrite" title="">mod_rewrite</a> to reduce exposure of query strings to search engines and other site visitors. </p> <a name="Query_Variable" id="Query_Variable"></a><h2> <span class="mw-headline">Query Variable</span></h2> <p>A Variable passed through the <a href="#Query_string" title="">query string</a>. For example, in the query string <code>?category_name=tech&feed=atom</code>, there are two query variables: <code>category_name</code> with a value of 'tech', and <code>feed</code> with a value of 'atom'. </p> <a name="QuickTag" id="QuickTag"></a><h2> <span class="mw-headline"> QuickTag </span></h2> <p>A <b>Quicktag</b> is a shortcut, or one-click button, that inserts HTML code into your posts. The <em> (emphasis) and </em> (stop emphasis) HTML tags are example of Quicktags. Some Quicktags, such as , insert HTML comment code that is used by plugins to replace text or perform certain actions. </p><p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="RDF" id="RDF"></a><h2> <span class="mw-headline"> RDF </span></h2> <p>Resource Description Framework. A language used to describe the locations of resources on the web. WordPress can produce output in RDF format that describes the locations of posts. Like RSS, RDF is used for content syndication. </p> <a name="Relative_Path" id="Relative_Path"></a><h2> <span class="mw-headline"> Relative Path </span></h2> <p>A <b>relative path</b> is the location of a file in relation to the current working directory and does not begin with a slash (/). This is different from an <a href="#Absolute_Path" title="">absolute path</a> which gives an exact location. </p> <ul><li> See also: <a href="#Absolute_Path" title="">Absolute Path</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Path_(computing)" class="external text" title="http://en.wikipedia.org/wiki/Path_(computing)">Path_Computing at Wikipedia</a> </li></ul> <a name="Relative_URI" id="Relative_URI"></a><h2> <span class="mw-headline"> Relative URI </span></h2> <p>A relative URI (sometimes called a <b>relative link</b>) is a partial URI that is interpreted (resolved) relative to a <b>base URI</b>. </p><p>On the World Wide Web, relative URIs come in two forms: </p><p>A <b>relative URI with an absolute path</b> is interpreted relative to the domain root: </p> <pre> /images/icecream.jpg → http://domain.example<strong>/images/icecream.jpg</strong> </pre> <p>A <b>relative URI with a relative path</b> is interpreted relative to the URL of the current document. E.g., on the web page <code>http://domain.example/icecream/chocolate.html</code>, </p> <pre> <strong>strawberry.html</strong> → http://domain.example/icecream/<strong>strawberry.html</strong> </pre> <p><a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Uniform_Resource_Identifier#URI_resolution" class="external text" title="http://en.wikipedia.org/wiki/Uniform_Resource_Identifier#URI_resolution">Wikipedia: URI Resolution</a> </p> <a name="Recordset" id="Recordset"></a><h2> <span class="mw-headline"> Recordset </span></h2> <p><b>Recordset</b> refers to the group of records or result returned from a database query. </p> <ul><li> See also <a href="#MySQL" title="">MySQL</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Class_Reference/wpdb" title="Class Reference/wpdb">wpdb</a> database class </li></ul> <a name="RSS" id="RSS"></a><h2> <span class="mw-headline"> RSS </span></h2> <p>"<i>Really Simple Syndication</i>": a format for syndicating many types of content, including blog entries, torrent files, video clips on news-like sites; specifically frequently updated content on a Web site, and is also known as a type of "feed" or "aggregator". An RSS feed can contain a summary of content or the full text, and makes it easier for people to keep up to date with sites they like in an automated manner (much like e-mail). </p><p>The content of the feed can be read by using software called an <a href="#News_reader" title="">RSS or Feed reader</a>. Feed readers display hyperlinks, and include other metadata (information about information) that helps people decide whether they want to read more, follow a link, or move on. </p><p>The original intent of RSS is to make information come to you (via the feed reader) instead of you going out to look for it (via the Web). </p><p>Programs called news aggregators permit users to view many feeds at once, providing 'push' content constantly. See <a href="/web/20130127231851/http://codex.wordpress.org/Category:Feeds" title="Category:Feeds">Category:Feeds</a> for Codex resources about bringing RSS feeds into WordPress. See also <a href="#RDF" title="">RDF</a> Site Summary. </p> <a name="RTL" id="RTL"></a><h2> <span class="mw-headline"> RTL </span></h2> <p>A written language is <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Right-to-left" class="external text" title="http://en.wikipedia.org/wiki/Right-to-left">Right-to-left</a> when its script flows from the right side of the page to the left. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Right-to-Left_Language_Support" title="Right-to-Left Language Support">Right-to-Left Language Support</a> </li></ul> <a name="Robots.txt" id="Robots.txt"></a><h2> <span class="mw-headline"> Robots.txt </span></h2> <p>Web Robots are programs which traverse the Web automatically. They are also called Web Wanderers, Web Crawlers, and Spiders. Search Engines are the main Web Robots. Some Web Robots look for a file named <b>robots.txt</b> on your web server to see what and where they should look for content and files on your web server. Some Web Robots ignore this file. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Search_Engine_Optimization_for_WordPress" title="Search Engine Optimization for WordPress">Search Engine Optimization for WordPress</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.google.com/support/webmasters/bin/answer.py?answer=40361" class="external text" title="http://www.google.com/support/webmasters/bin/answer.py?answer=40361">Google information about robots.txt</a>, <a href="https://web.archive.org/web/20130127231851/http://www.robotstxt.org/wc/robots.html" class="external text" title="http://www.robotstxt.org/wc/robots.html">The Web Robots Page</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Role" id="Role"></a><h2> <span class="mw-headline"> Role </span></h2> <p>A <b>role</b> gives users permission to perform a group of tasks. When a user logs in and is authenticated, the user's role determines which <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Capabilities" title="Glossary">capabilities</a> the user has, and each capability is permission to perform one or more types of task. All users with the same role normally have the same capabilities. For example, users who have the Author role usually have permission to edit their own posts, but not permission to edit other users' posts. WordPress comes with six roles and over fifty capabilities in its role-based access system. Plugins can modify the system. </p> <ul><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Roles_and_Capabilities" title="Roles and Capabilities">Roles and Capabilities</a> </li><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Role-based_access_control" class="external text" title="http://en.wikipedia.org/wiki/Role-based_access_control">Role-based access control</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Screen" id="Screen"></a><h2> <span class="mw-headline"> Screen </span></h2> <p>In WordPress a <b>screen</b> is a web page used for managing part of a weblog (<a href="#Site" title="">site</a>) or <a href="#Network" title="">network</a>. The term 'screen' is used to avoid confusion with '<a href="#Page" title="">page</a>', which has a specific and different meaning in WordPress. For example, the web page used to manage posts is known as the <a href="/web/20130127231851/http://codex.wordpress.org/Posts_Screen" title="Posts Screen">Posts Screen</a>. </p><p><a href="#top" title="">Back to the Top</a> </p> <a name="Shell" id="Shell"></a><h2> <span class="mw-headline"> Shell </span></h2> <p>A <b>shell</b> is a program which interacts directly with an operating system such as MS-DOS, <a href="#Unix" title="">Unix</a>/<a href="#Linux" title="">Linux</a>, <a href="#Mac_OS_X" title="">Mac OS X</a>, or others — but it is most commonly associated with <a href="#Unix" title="">Unices</a>. It is often referred to as a 'console' or 'command line', because it is controlled using typed commands rather than mouse or graphical interface input. </p><p>Most often, when interacting with a remote computer (as one would when configuring WordPress), an additional "faux" shell is involved called <a href="#SSH" title="">SSH</a>. </p><p>Some popular shell programs are: </p> <ul><li> <a href="https://web.archive.org/web/20130127231851/http://www.gnu.org/software/bash/bash.html" class="external text" title="http://www.gnu.org/software/bash/bash.html">Bash</a> (Bourne Again Shell) </li><li> <a href="https://web.archive.org/web/20130127231851/http://tcsh.org/" class="external text" title="http://tcsh.org/">Tcsh</a> (an expanded C Shell) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.zsh.org/" class="external text" title="http://www.zsh.org/">Zsh</a> </li></ul> <a name="Shortcode" id="Shortcode"></a><h2> <span class="mw-headline"> Shortcode </span></h2> <p>A <a href="/web/20130127231851/http://codex.wordpress.org/Shortcode" title="Shortcode">Shortcode</a> is a technique for embedding a snippet of <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#PHP" title="Glossary">PHP</a> code into the body of a page or other content item. </p> <a name="Sidebar" id="Sidebar"></a><h2> <span class="mw-headline"> Sidebar </span></h2> <p>A <b>sidebar</b> is a vertical column provided by a <a href="#Theme" title="">theme</a> for displaying information other than the main <a href="#Content" title="">content</a> of the web page. Themes usually provide at least one sidebar at the left or right of the content. Sidebars usually contain <a href="#Widget" title="">widgets</a> that an administrator of the site can customize. </p><p>In a theme, sidebars are generated by a <a href="#Template" title="">template</a> file, typically named <code>sidebar.php</code>. </p> <ul><li> See also: <a href="#Footer_area" title="">Footer area</a> </li></ul> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Sidebars" title="Sidebars">Sidebars</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Templates" title="Templates">Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Customizing_Your_Sidebar" title="Customizing Your Sidebar">Customizing Your Sidebar</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Stepping_Into_Templates" title="Stepping Into Templates">Stepping Into Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Template_Hierarchy" title="Template Hierarchy">Template Hierarchy</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Site" id="Site"></a><h2> <span class="mw-headline"> Site </span></h2> <p>In the WordPress user interface, a <b>site</b> can simply be the website created by WordPress, or it can be a virtual website created as part of a <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Network" title="Glossary">network</a> by the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Multisite" title="Glossary">multisite</a> feature. A site in a network is virtual in the sense that it does not have its own directory on the server, although it has its own URL and it might have its own domain name. </p><p>In WordPress code the site is the website created by WordPress. If multisite is in use, then the site is the network website and each virtual website is known as a <i>blog</i>. </p> <ul><li> Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Create_A_Network" title="Create A Network">Create A Network</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Slug" id="Slug"></a><h2> <span class="mw-headline"> Slug </span></h2> <p>A <b>slug</b> is a few words that describe a post or a page. Slugs are usually a URL friendly version of the post title (which has been automatically generated by WordPress), but a slug can be anything you like. Slugs are meant to be used with <a href="#Permalink" title="">permalinks</a> as they help describe what the content at the URL is. </p><p>Example post permalink: <code><a href="https://web.archive.org/web/20130127231851/http://wordpress.org/development/2006/06/wordpress-203/" class="external free" title="http://wordpress.org/development/2006/06/wordpress-203/">http://wordpress.org/development/2006/06/wordpress-203/</a></code> </p><p>The slug for that post is "<code>wordpress-203</code>". </p> <a name="Smileys" id="Smileys"></a><h2> <span class="mw-headline"> Smileys </span></h2> <p>Smileys (also called Smilies or Emoticons) are stylized representations of a human face, usually displayed as yellow buttons with two dots for the eyes, and a half mouth. Smileys are often used in WordPress Plugins. By default, WordPress automatically converts text smileys to graphic images. When you type <tt>;-)</tt> in your post you see <a href="/web/20130127231851/http://codex.wordpress.org/File:icon_wink.gif" class="image" title="Wink Icon"><img alt="Wink Icon" src="/web/20130127231851im_/http://codex.wordpress.org/images/4/4b/icon_wink.gif" width="15" height="15" border="0"/></a> when you preview or publish your post. </p><p>Related article: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Smilies" title="Using Smilies">Using Smilies</a> </p> <a name="Spam" id="Spam"></a><h2> <span class="mw-headline"> Spam </span></h2> <p>Once upon a time, <a href="https://web.archive.org/web/20130127231851/http://www.hormel.com/" class="external text" title="http://www.hormel.com">SPAM</a> was an animal by-product that came in a can and was fodder for many Monty Python sketches, but since the world-wide adoption of the internet as an integral part of daily life, Spam has become synonymous with what is wrong with the internet. Spam, in general terms, is an email or other forms of unsolicited advertising. Spam is very easy to spread throughout the internet, and works on the principle that if you send out thousands, or hundreds of thousands of unsolicited advertisements, scams, or other questionable methods of making money, that you only need a very small percentage of people to be fooled and you will make lots of money. </p><p>Common spam these days comes from online gambling sites and those trying to sell drugs for "male enhancement." Lately, web logs, or blogs, as we call them, have been targeted by spammers to try to increase their site ratings in the search engines. Spammers use various methods to distribute their electronic junk mail, and employ bots, or computer programs to quickly and easily send email or comments to millions of addresses and <a href="#IP_address" title="">IPs</a> all over the world. </p><p>Spammers can be difficult to track down as they often hijack peoples' email and <a href="#IP_address" title="">IP</a> addresses. When this happens, it may appear a friend sent you the spam, but in fact, the spammer's <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Internet_bot" class="external text" title="http://en.wikipedia.org/wiki/Internet_bot">bot</a> grabbed your friend's email address and used it to hide the true source of the spam. WordPress <a href="#Developer" title="">developers</a> and community members are constantly working on more and better ways to combat these annoying <b>spammers</b> as they clog the internet with their garbage. You can help by offering your talents, ideas, suggestions, or just by being vigilant and installing any of the <a href="/web/20130127231851/http://codex.wordpress.org/Combating_Comment_Spam" title="Combating Comment Spam">currently-available spam combating tools</a>. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/SPAM" class="external text" title="http://en.wikipedia.org/wiki/SPAM">SPAM at Wikipedia</a> </li></ul> <a name="SSH" id="SSH"></a><h2> <span class="mw-headline"> SSH </span></h2> <p><b>SSH</b> stands for Secure Shell. It is a communication protocol for connecting to remote computers over TCP/IP. Various authentication methods can be used which make SSH more secure than <a href="#Telnet" title="">Telnet</a>. </p> <a name="SSL" id="SSL"></a><h2> <span class="mw-headline"> SSL </span></h2> <p><b>SSL</b> stands for Secure Sockets Layer and is the predecessor to Transport Layer Security. These are cryptographic protocols for secure communications across an unsecured network like the Internet. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Secure_Sockets_Layer" class="external text" title="http://en.wikipedia.org/wiki/Secure_Sockets_Layer">SSL at Wikipedia</a> </li></ul> <a name="String" id="String"></a><h2> <span class="mw-headline"> String</span></h2> <p>In computer science a string is any finite sequence of characters (i.e., letters, numerals, symbols and punctuation marks). Typically, programmers must enclose strings in quotation marks for the data to be recognized as a string and not a number or variable name. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/String_(computer_science)" class="external text" title="http://en.wikipedia.org/wiki/String_(computer_science)">String at Wikipedia</a> </li></ul> <a name="Subversion" id="Subversion"></a><h2> <span class="mw-headline"> Subversion </span></h2> <p><a href="https://web.archive.org/web/20130127231851/http://subversion.tigris.org/" class="external text" title="http://subversion.tigris.org/">Subversion</a> is an <a href="#Open_Source" title="">open-source</a> <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Revision_control" class="external text" title="http://en.wikipedia.org/wiki/Revision_control">version control</a> software tool used by the <a href="/web/20130127231851/http://codex.wordpress.org/Copyright_Holders" title="Copyright Holders">WordPress Developers</a> to maintain and track the changes and updates to the various WordPress versions. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Using_Subversion" title="Using Subversion">Using Subversion</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://wordpress.org/download/svn/" class="external text" title="http://wordpress.org/download/svn/">Subversion access at wordpress.org</a>, <a href="https://web.archive.org/web/20130127231851/http://svnbook.red-bean.com/" class="external text" title="http://svnbook.red-bean.com/">Subversion book at red-bean.com</a> </li></ul> <a name="Syndication" id="Syndication"></a><h2> <span class="mw-headline"> Syndication </span></h2> <p>See RSS: <a href="#RSS" title="">Really Simple Syndication</a> </p><p><a href="#top" title="">Back to the Top</a> </p><p><br/> </p> <a name="Tag" id="Tag"></a><h2> <span class="mw-headline"> Tag </span></h2> <p>A tag is a keyword which describes all or part of a Post. Think of it like a <a href="#Category" title="">Category</a>, but smaller in scope. A post may have several tags, many of which relate to it only peripherally. Like Categories, Tags are usually linked to a page which shows all posts having the same tag. Tags can be created on-the-fly by simply typing them into the tag field. </p><p>Tags can also be displayed in "clouds" which show large numbers of Tags in various sizes, colors, etc. This allows for a sort of total perspective on the blog, allowing people to see the sort of things your blog is about most. </p><p>Many people confuse Tags and Categories, but the difference is easy: Categories generally don't change often, while your Tags usually change with every Post. </p> <a name="Tagline" id="Tagline"></a><h2> <span class="mw-headline"> Tagline </span></h2> <p>A tagline is a catchy phrase that describes the character or the attributes of the blog in a brief, concise manner. Think of it as the slogan, or catchline for a weblog. </p> <a name="Task_Based_Documentation" id="Task_Based_Documentation"></a><h2> <span class="mw-headline">Task Based Documentation</span></h2> <p>Task based, or task oriented documentation is writing that takes you through a process/task step-by-step; it is succinct, lacks jargon, is easily understood, and structured entirely around performing specific tasks. </p> <dl><dd>In order to get to Z, you need to: <ol><li>Step x </li><li>Step y </li><li>Step z </li></ol> </dd></dl> <p><br/> Keep in mind that people who need to know how to perform a task usually need answers quick! </p> <a name="Taxonomy" id="Taxonomy"></a><h2> <span class="mw-headline">Taxonomy</span></h2> <p>A <b>taxonomy</b> allows for the classification of things. In WordPress, there are two built-in taxonomies, categories and tags. These taxonomies help further classify posts and custom post types. Also, custom taxonomies can be defined. </p> <ul><li> See also: <a href="#Category" title="">Category</a>, <a href="#Tag" title="">Tag</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Function_Reference/register_taxonomy" title="Function Reference/register taxonomy">register_taxonomy</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Taxonomy" class="extiw" title="wikipedia:Taxonomy">Taxonomy at Wikipedia</a> </li></ul> <a name="Telnet" id="Telnet"></a><h2> <span class="mw-headline">Telnet</span></h2> <p>Telnet is a <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Internet_protocol_suite" class="external text" title="http://en.wikipedia.org/wiki/Internet_protocol_suite">communications protocol</a> used to establish a connection to another computer. <i>Telnet</i> runs on top of <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Transmission_Control_Protocol" class="external text" title="http://en.wikipedia.org/wiki/Transmission_Control_Protocol">TCP</a>/<a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Internet_Protocol" class="external text" title="http://en.wikipedia.org/wiki/Internet_Protocol">IP</a> and is typically used in conjuction with terminal emulation software to login to remote computers. Telnet is inherently insecure and has largely been replaced by <a href="#SSH" title="">SSH</a> </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Telnet" class="external text" title="http://en.wikipedia.org/wiki/Telnet">Telnet at Wikipedia</a> </li></ul> <a name="Template" id="Template"></a><h2> <span class="mw-headline"> Template </span></h2> <p>In WordPress a <b>template</b> is a file that defines an area of the web pages generated by a <a href="#Theme" title="">theme</a>. For example, there is typically a template for the header area at the top of the web pages, a template for the <a href="#Content" title="">content</a>, a template for the <a href="#Sidebar" title="">sidebars</a>, and so on. The templates are like building blocks that make up the complete web page. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Templates" title="Templates">Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Stepping_Into_Templates" title="Stepping Into Templates">Stepping Into Templates</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Template_Hierarchy" title="Template Hierarchy">Template Hierarchy</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Text_editor" id="Text_editor"></a><h2> <span class="mw-headline"> Text editor </span></h2> <p>A <b>text editor</b> is a program which edits files in <i>plain text</i> format, as compared to <i>binary</i> format. Using a non-text based word processing program (e.g. using Microsoft Word to edit <a href="#PHP" title="">PHP</a> scripts) can cause major problems in your code. This is because non-text based word processing programs insert extra formatting into text files, and can corrupt the files when they need to be interpreted by the interpreter. An editor like Notepad does not insert any extra formatting. </p><p><b>Edit WordPress Files with a text only editor.</b> </p><p>Some examples of file formats which need to be edited as plain text: </p> <ul><li> <a href="#HTML" title="">HTML</a> documents </li><li> <a href="#PHP" title="">PHP</a> scripts </li><li> <a href="#Perl" title="">Perl</a> scripts </li><li> Rich Text Format documents </li><li> <a href="#JavaScript" title="">JavaScript</a> scripts </li></ul> <p>Some examples of text editor programs: </p> <ul><li> <a href="https://web.archive.org/web/20130127231851/http://www.barebones.com/products/bbedit/index.shtml" class="external text" title="http://www.barebones.com/products/bbedit/index.shtml">BBEdit</a> (Classic Mac OS, Mac OS X, $$$) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.boxersoftware.com/" class="external text" title="http://www.boxersoftware.com/">Boxer Text Editor</a> (Windows) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.panic.com/coda/" class="external text" title="http://www.panic.com/coda/">Coda</a> (Mac OS X, Shareware) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.crimsoneditor.com/" class="external text" title="http://www.crimsoneditor.com/">Crimson Editor</a> (Windows, Freeware) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.jgsoft.com/editpad" class="external text" title="http://www.jgsoft.com/editpad">EditPad</a> (cross-platform) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.editplus.com/" class="external text" title="http://www.editplus.com/">EditPlus</a> (Windows) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.editra.org/" class="external text" title="http://www.editra.org/">Editra</a> (cross-platform, Open Source, Free) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.gnu.org/software/emacs/emacs.html" class="external text" title="http://www.gnu.org/software/emacs/emacs.html">emacs</a> (<a href="#Unix" title="">Unices, Windows, Mac OS X, Open Source, Free</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.fraiseapp.com/" class="external text" title="http://www.fraiseapp.com/">Fraise</a> (Mac OS X, Open Source, Free, based on Smultron) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.gnome.org/projects/gedit/" class="external text" title="http://www.gnome.org/projects/gedit/">gedit</a> (<a href="#Unix" title="">Unices</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://jedit.org/" class="external text" title="http://jedit.org/">JEdit</a> (cross-platform) </li><li> <a href="https://web.archive.org/web/20130127231851/http://kate.kde.org/" class="external text" title="http://kate.kde.org/">Kate</a> (<a href="#Unix" title="">Unices</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.activestate.com/komodo_edit/" class="external text" title="http://www.activestate.com/komodo_edit/">Komodo Edit</a> (cross-platform, Open Source, Free) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.kde-apps.org/content/show.php?content=9901" class="external text" title="http://www.kde-apps.org/content/show.php?content=9901">Kwrite</a> (<a href="#Unix" title="">Unices</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://notepad-plus.sourceforge.net/" class="external text" title="http://notepad-plus.sourceforge.net/">Notepad++</a> (Windows, Open Source, Free) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.mpsoftware.dk/phpdesigner.php" class="external text" title="http://www.mpsoftware.dk/phpdesigner.php">phpDesigner</a> (Windows) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.washington.edu/pine/" class="external text" title="http://www.washington.edu/pine/">pico</a> (<a href="#Unix" title="">Unices</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.pspad.com/" class="external text" title="http://www.pspad.com/">PSPad</a> (Windows, Free) </li><li> <a href="https://web.archive.org/web/20130127231851/http://smultron.sourceforge.net/" class="external text" title="http://smultron.sourceforge.net/">Smultron</a> (Mac OS X, Open Source, Free/$) Smultron 4 (req OS-X Lion) (v.cheap in MacApp store) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.codingmonkeys.de/subethaedit/" class="external text" title="http://www.codingmonkeys.de/subethaedit/">SubEthaEdit</a> (Mac OS X, $) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.sublimetext.com/2" class="external text" title="http://www.sublimetext.com/2">Sublime Text 2</a> (Windows, Linux, Mac OS X) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.apple.com/education/accessibility/technology/textedit.html" class="external text" title="http://www.apple.com/education/accessibility/technology/textedit.html">TextEdit</a> (comes with Mac OS X) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.macromates.com/" class="external text" title="http://www.macromates.com">TextMate</a> (Mac OS X, $) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.textpad.com/" class="external text" title="http://www.textpad.com/">TextPad</a> (Windows) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.barebones.com/products/textwrangler/index.shtml" class="external text" title="http://www.barebones.com/products/textwrangler/index.shtml">TextWrangler</a> (Mac OS X, Free) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.ultraedit.com/" class="external text" title="http://www.ultraedit.com/">UltraEdit-32</a> </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.vim.org/" class="external text" title="http://www.vim.org/">vim</a> (<a href="#Unix" title="">Unices, Windows, Mac OS X, Open Source, Free</a>) </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.flos-freeware.ch/notepad2.html" class="external text" title="http://www.flos-freeware.ch/notepad2.html">Notepad2</a> (Windows, Freeware) </li><li> <a href="https://web.archive.org/web/20130127231851/http://webtide.eu/" class="external text" title="http://webtide.eu/">WebTide Editor</a> (Windows, Linux, Mac OS X, Freeware, Java) </li></ul> <p>Some examples of non-plain text formats that require special software for editing: </p> <ul><li> Microsoft Word documents </li><li> Microsoft Excel spreadsheets </li><li> Images, such as JPEG, PNG, or GIF </li></ul> <p>Some examples of software which can edit text, but which are <b>NOT</b> regarded as basic text editors and <b>NOT recommended</b> for use on WordPress files: </p> <ul><li> Microsoft Word </li><li> Microsoft Works </li><li> Microsoft Excel </li><li> Adobe Photoshop </li><li> Adobe Illustrator </li><li> Adobe Dreamweaver </li></ul> <a name="Theme" id="Theme"></a><h2> <span class="mw-headline"> Theme </span></h2> <p>A theme is a collection of files that work together to produce a graphical interface with an underlying unifying design for a weblog. A theme modifies the way the weblog is displayed, without modifying the underlying software. Essentially, the WordPress theme system is a way to skin your weblog. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Theme_Development" title="Theme Development">Theme Development</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Using_Themes" title="Using Themes">Using Themes</a> </li></ul> <a name="Trackback" id="Trackback"></a><h2> <span class="mw-headline"> Trackback </span></h2> <p>Trackback helps you to notify another author that you wrote something related to what he had written on his blog, even if you don't have an explicit link to his article. This improves the chances of the other author sitting up and noticing that you gave him credit for something, or that you improved upon something he wrote, or something similar. With pingback and trackback, blogs are interconnected. Think of them as the equivalents of acknowledgements and references at the end of an academic paper, or a chapter in a textbook. </p> <ul><li> See also: <a href="#Pingback" title="">Pingback</a> </li><li> Related articles: [<a href="https://web.archive.org/web/20130127231851/http://codex.wordpress.org/Introduction_to_Blogging#Trackbacks|Introduction" class="external text" title="http://codex.wordpress.org/Introduction_to_Blogging#Trackbacks|Introduction">to Blogging: Trackbacks</a>] </li></ul> <a name="Toolbar" id="Toolbar"></a><h2> <span class="mw-headline"> Toolbar </span></h2> <p>The <b>Toolbar</b> is an area of the screen just above your site that lists useful admininstration screen links such as add a new post or edit your profile. The Toolbar concept was added to WordPress in <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.3" title="Version 3.3">Version 3.3</a>. It combines the former <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Admin_Bar" title="Glossary">Admin Bar</a> and admin header, and cannot be disabled from the backend anymore. Each user can use <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels" title="Administration Panels" class="mw-redirect">Administration</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Administration_Panels#Your_Profile" title="Administration Panels" class="mw-redirect">Users</a> > <a href="/web/20130127231851/http://codex.wordpress.org/Users_Your_Profile_SubPanel" title="Users Your Profile SubPanel" class="mw-redirect">Your Profile</a> to turn on (or off) the Toolbar on the frontend of the site. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Users_Your_Profile_SubPanel" title="Users Your Profile SubPanel" class="mw-redirect">Your Profile Screen</a> </li></ul> <a name="Twenty_Twelve_theme" id="Twenty_Twelve_theme"></a><h2> <span class="mw-headline"> Twenty Twelve theme </span></h2> <p>Starting with <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.5" title="Version 3.5">Version 3.5</a>, the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Twenty_Twelve_theme" title="Glossary">Twenty Twelve theme</a> became the default (and fallback) theme. Twenty Twelve is a fully responsive theme that looks great on any device. Features include a front page template with its own <a href="/web/20130127231851/http://codex.wordpress.org/WordPress_Widgets" title="WordPress Widgets">Widgets</a>, an optional display font, styling for <a href="/web/20130127231851/http://codex.wordpress.org/Post_Formats" title="Post Formats">Post Formats</a> on both index and single views, and an optional no-sidebar page template. </p> <ul><li> See also: <a href="#Default_theme" title="">Default theme</a>, <a href="#Twenty_Eleven_theme" title="">Twenty Eleven theme</a>, <a href="#Twenty_Ten_theme" title="">Twenty Ten theme</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Child_Themes" title="Child Themes">Child Themes</a> </li></ul> <a name="Twenty_Eleven_theme" id="Twenty_Eleven_theme"></a><h2> <span class="mw-headline"> Twenty Eleven theme </span></h2> <p>Between <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.2" title="Version 3.2">Version 3.2</a> and <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.5" title="Version 3.5">Version 3.5</a>, the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Twenty_Eleven_theme" title="Glossary">Twenty Eleven theme</a> was the default (and fallback) theme. Twenty Eleven is a community-developed theme that emphasizes <a href="/web/20130127231851/http://codex.wordpress.org/Post_Formats" title="Post Formats">Post Formats</a>, random theme header images, customizable layouts and colors, HTML 5 improvements, and adherence to <a href="/web/20130127231851/http://codex.wordpress.org/WordPress_Coding_Standards" title="WordPress Coding Standards">WordPress coding standards</a>. It was replaced as the default in <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.5" title="Version 3.5">Version 3.5</a> by the <a href="#Twenty_Twelve_theme" title="">Twenty Twenty theme</a> and remains bundled with WordPress. </p> <ul><li> See also: <a href="#Default_theme" title="">Default theme</a>, <a href="#Twenty_Twelve_theme" title="">Twenty Twenty theme</a>, <a href="#Twenty_Ten_theme" title="">Twenty Ten theme</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Child_Themes" title="Child Themes">Child Themes</a> </li></ul> <a name="Twenty_Ten_theme" id="Twenty_Ten_theme"></a><h2> <span class="mw-headline"> Twenty Ten theme </span></h2> <p>Starting with <a href="/web/20130127231851/http://codex.wordpress.org/Version_3.0" title="Version 3.0">Version 3.0</a>, the <a href="/web/20130127231851/http://codex.wordpress.org/Glossary#Twenty_Ten_theme" title="Glossary">Twenty Ten theme</a> became the default (and fallback) theme. As described in <a href="https://web.archive.org/web/20130127231851/http://wordpress.org/development/2009/12/2010-a-theme-odyssey/" class="external text" title="http://wordpress.org/development/2009/12/2010-a-theme-odyssey/">2010: A Theme Odyssey</a>, the Twenty Ten theme serves as a good example theme that includes new theme-based features, and looks nice on a public site. Twenty Ten is a community-developed theme. </p><p>Up to <a href="/web/20130127231851/http://codex.wordpress.org/Version_2.9.2" title="Version 2.9.2">Version 2.9.2</a>, the default theme was the Kubrick theme and was housed in the <i>wp-content/themes/default</i> folder. The Twenty Ten theme is housed in the <i>wp-content/themes/twentyten</i> folder and was the only theme in the WordPress distribution. </p> <ul><li> See also: <a href="#Default_theme" title="">Default theme</a> </li><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Child_Themes" title="Child Themes">Child Themes</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Unicode" id="Unicode"></a><h2> <span class="mw-headline"> Unicode </span></h2> <p>A widely supported and preferred character encoding system. </p><p>For a computer to display letters (or any text characters), it needs to enumerate them - create an index of characters it knows how to display. These indexes are known as character sets. This is invaluable for users hosting <a href="/web/20130127231851/http://codex.wordpress.org/Localization" title="Localization" class="mw-redirect">WordPress in a non-English language</a>. </p><p>The most widely used collections of these character sets are the iso-8859 with <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/ISO_8859-1" class="external text" title="http://en.wikipedia.org/wiki/ISO_8859-1">iso-8859-1</a> and <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/ISO_8859-15" class="external text" title="http://en.wikipedia.org/wiki/ISO_8859-15">iso-8859-15</a> (which contains the euro sign and some characters used in Dutch, French, Czech and Slovak) being the most common; they are also known as Latin1 and Latin9. These character sets use 8 bits (a single byte) for each character, allowing for 255 different characters (256, counting null). However, when considering that Latin-based languages aren't the only ones in the world (think Japanese or Hebrew), 255 characters aren't nearly enough. </p><p>There is a wide index of characters known as <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Unicode" class="external text" title="http://en.wikipedia.org/wiki/Unicode">Unicode</a>. Unicode has so many characters that sometimes more than 16 bits (2 bytes!) are required to represent them. Furthermore, the first 127 characters of Unicode are the same as the first 127 of the most widely used character set - iso-8859-1. For this purpose, UTF, the Unicode Translation Format, was created. UTF uses different numbers of bits for characters, and allows for the entire range of Unicode to be used. What you should probably know is: </p> <ul><li> UTF-8 is an 8-bit-minimum type of UTF. There are also UTF-16 and UTF-32. </li><li> If your document is in a Latin-based encoding, you probably don't need to change anything about it for it to be UTF. </li><li> A single UTF document can be in various languages with no need to switch encodings halfway through. </li></ul> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.joelonsoftware.com/articles/Unicode.html" class="external text" title="http://www.joelonsoftware.com/articles/Unicode.html">Joel Spolsky on Unicode</a> </li></ul> <a name="Unix" id="Unix"></a><h2> <span class="mw-headline"> Unix </span></h2> <p><b>Unix</b>, or <b>UNIX</b>, is a computer operating system developed at AT&T's Bell Laboratories starting back in 1969. Initially designed with the objective of creating an OS written in a high level language rather than assembly, a majority of <a href="#Web_server" title="">web servers</a> currently run on different "flavors" of this high-performance OS, or on <a href="#Linux" title="">Linux</a>, developed as a Unix-like operating system. </p> <ul><li> See also: <a href="/web/20130127231851/http://codex.wordpress.org/UNIX_Shell_Skills" title="UNIX Shell Skills">UNIX Shell Skills</a>, <a href="#Mac_OS_X" title="">Mac OS X</a> </li></ul> <a name="Unix_Time" id="Unix_Time"></a><h2> <span class="mw-headline"> Unix Time </span></h2> <p><b>Unix Time</b>, or a <b>timestamp</b>, is a method of tracking time by determining the approximate number of seconds from a particular event. That event is called an Epoch. Since this time format is only off by a few seconds each century, it is usually considered good enough for most applications. </p><p>Unix time is (currently) a ten digit number, and looks like this: <tt>1229362315</tt>. WordPress often uses a Unix timestamp internally to track time. The human readable times and dates you see are converted from Unix Time or from a MySQL DATETIME field. </p> <ul><li> External Links: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Unix_time" class="extiw" title="wikipedia:Unix time">Unix Time at Wikipedia</a>, <a href="https://web.archive.org/web/20130127231851/http://dev.mysql.com/doc/refman/4.1/en/datetime.html" class="external text" title="http://dev.mysql.com/doc/refman/4.1/en/datetime.html">MySQL DATETIME</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="UTC" id="UTC"></a><h2> <span class="mw-headline"> UTC </span></h2> <p><b>UTC</b> ("Universal Time, Coordinated") is the basis of international time standards from which time zones around the world are calculated. For most purposes it is the same as the older <a href="#GMT" title="">GMT</a> standard. </p> <ul><li> External link: <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/Coordinated_Universal_Time" class="extiw" title="wikipedia:Coordinated Universal Time">UTC</a> (Wikipedia) </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Web_server" id="Web_server"></a><h2> <span class="mw-headline"> Web server </span></h2> <p>A <b>web server</b> is a computer containing software for, and connected to infrastructure for, <i>hosting</i>, or serving, web sites written in <a href="#HTML" title="">HTML</a>. The most common web server software on the internet is <a href="#Apache" title="">Apache</a>, which is frequently used in conjunction with <a href="#PHP" title="">PHP</a>, <a href="#Perl" title="">Perl</a>, and other scripting languages. </p><p>It is possible to create one's own web server, hosted on any speed of internet connection, but many people choose to purchase packages from <a href="#Hosting_provider" title="">hosting providers</a>, who have the capacity and facilities to provide adequate bandwidth, uptime, hardware, and maintenance for frequently-visited web sites. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/Hosting_WordPress" title="Hosting WordPress">Hosting WordPress</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="Widget" id="Widget"></a><h2> <span class="mw-headline"> Widget </span></h2> <p>In WordPress a <b>widget</b> is a self-contained area of a web page that performs a specific function, or the code that generates such a self-contained area. For example, WordPress has a built-in widget that displays a list of pages in a weblog's <a href="#Sidebar" title="">sidebar</a>, and it has another built-in widget that displays a list of recent comments in the <a href="#Dashboard" title="">Dashboard</a>. Plugins and themes can provide additional widgets. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/WordPress_Widgets" title="WordPress Widgets">WordPress Widgets</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Widgets_API" title="Widgets API">Widgets API</a>, <a href="/web/20130127231851/http://codex.wordpress.org/Dashboard_Widgets_API" title="Dashboard Widgets API">Dashboard Widgets API</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="XFN" id="XFN"></a><h2> <span class="mw-headline"> XFN </span></h2> <p><a href="https://web.archive.org/web/20130127231851/http://gmpg.org/xfn" class="external text" title="http://gmpg.org/xfn">The XHTML Friends Network</a>. A decentralised project to have inter-blog links that represent relationships between bloggers. XFN links resemble <code><a href="http://www.photomatt.net/" rel="friend met">Photo Matt</a></code>. </p> <a name="XHTML" id="XHTML"></a><h2> <span class="mw-headline"> XHTML </span></h2> <p><b>XHTML</b>, or <b>Extensible HyperText Markup Language</b>, is the successor to <a href="#HTML" title="">HTML</a> as the <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/" class="external text" title="http://www.w3.org">W3C</a> standard language with which all web pages are created. It is often used in conjunction with <a href="#CSS" title="">CSS</a> and <a href="#JavaScript" title="">JavaScript</a>. </p><p>WordPress strives to conform to the XHTML 1.0 Transitional standard. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/TR/xhtml1/" class="external text" title="http://www.w3.org/TR/xhtml1/">XHTML 1.0 Specification (Second Edition)</a>, <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/TR/xhtml11/" class="external text" title="http://www.w3.org/TR/xhtml11/">XHTML 1.1 Specification</a> </li></ul> <a name="XML" id="XML"></a><h2> <span class="mw-headline"> XML </span></h2> <p><b>XML</b>, or <b>Extensible Markup Language</b>, is written in Standard Generalized Markup Language (SGML) and essentially allows you to define your own markup language. XML is extremely useful in describing, sharing, and transmitting data across the Internet. Typically used in conjunction with <a href="#HTML" title="">HTML</a>, XML defines data and <a href="#HTML" title="">HTML</a> displays that data. </p> <ul><li> External links: <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/XML" class="external text" title="http://www.w3.org/XML">Extensible Markup Language (XML) Resources at W3C org</a> <a href="https://web.archive.org/web/20130127231851/http://www.ucc.ie/xml" class="external text" title="http://www.ucc.ie/xml">XML 4.0 FAQ</a>, <a href="https://web.archive.org/web/20130127231851/http://www.w3.org/MarkUp/SGML/" class="external text" title="http://www.w3.org/MarkUp/SGML/">Overview of SGML Resources at W3C org</a> </li></ul> <a name="XML-RPC" id="XML-RPC"></a><h2> <span class="mw-headline"> XML-RPC </span></h2> <p><b>XML-RPC</b> is <b>Extensible Markup Language-Remote Procedure Call</b>. A Remote Procedure Call (RPC) allows you to call (or request) another application and expect that application to honor the request (answer the call). So, <b>XML-RPC</b> allows a user (or <a href="#Developer" title="">developer</a>) to send a request, formatted in <a href="#XML" title="">XML</a>, to an external application. </p> <ul><li> Related articles: <a href="/web/20130127231851/http://codex.wordpress.org/XML-RPC_Support" title="XML-RPC Support">XML-RPC Support</a> </li><li> External links: <a href="https://web.archive.org/web/20130127231851/http://davenet.scripting.com/1998/07/14/xmlRpcForNewbies" class="external text" title="http://davenet.scripting.com/1998/07/14/xmlRpcForNewbies">Dave Winer's XML-RPC for Newbies</a>, <a href="https://web.archive.org/web/20130127231851/http://www.xmlrpc.com/" class="external text" title="http://www.xmlrpc.com">XML-RPC Home Page</a>, <a href="https://web.archive.org/web/20130127231851/http://ws.apache.org/xmlrpc/" class="external text" title="http://ws.apache.org/xmlrpc/">Apache XML-RPC</a>, <a href="https://web.archive.org/web/20130127231851/http://phpxmlrpc.sourceforge.net/" class="external text" title="http://phpxmlrpc.sourceforge.net">XML-RPC for PHP Homepage</a>, <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/XML-RPC" class="external text" title="http://en.wikipedia.org/wiki/XML-RPC">XML-RPC at Wikipedia</a> </li></ul> <p><a href="#top" title="">Back to the Top</a> </p> <a name="More_Resources" id="More_Resources"></a><h2> <span class="mw-headline"> More Resources </span></h2> <p>More glossaries with collection of blogging terms, acronyms and abbreviations. </p> <ul><li> <a href="https://web.archive.org/web/20130127231851/http://www.quickonlinetips.com/archives/2006/06/the-giant-blogging-terms-glossary/" class="external text" title="http://www.quickonlinetips.com/archives/2006/06/the-giant-blogging-terms-glossary/">Giant Blogging Terms Glossary</a> </li><li> <a href="https://web.archive.org/web/20130127231851/http://en.wikipedia.org/wiki/List_of_blogging_terms" class="external text" title="http://en.wikipedia.org/wiki/List_of_blogging_terms">Blogging Terms at Wikipedia</a> </li><li> <a href="https://web.archive.org/web/20130127231851/http://www.samizdata.net/blog/glossary.html" class="external text" title="http://www.samizdata.net/blog/glossary.html">Blog Glossary at Samizdata.net</a> </li></ul>  <div class="printfooter"> Retrieved from "<a href="https://web.archive.org/web/20130127231851/http://codex.wordpress.org/Glossary">http://codex.wordpress.org/Glossary</a>"</div> <div id="catlinks"><div id="catlinks" class="catlinks"><div id="mw-normal-catlinks"><a href="/web/20130127231851/http://codex.wordpress.org/Special:Categories" title="Special:Categories">Categories</a>: <span dir="ltr"><a href="/web/20130127231851/http://codex.wordpress.org/Category:WordPress_Help" title="Category:WordPress Help">WordPress Help</a></span> | <span dir="ltr"><a href="/web/20130127231851/http://codex.wordpress.org/Category:Troubleshooting" 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