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difference between a list and a category?</span> </div> </a> <ul id="toc-What_is_the_difference_between_a_list_and_a_category?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Are_"List_of_..."_articles_still_needed?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Are_"List_of_..."_articles_still_needed?"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Are "List of ..." articles still needed?</span> </div> </a> <ul id="toc-Are_"List_of_..."_articles_still_needed?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What's_the_difference_between_categories_and_navigation_templates?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What's_the_difference_between_categories_and_navigation_templates?"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>What's the difference between categories and navigation templates?</span> </div> </a> <ul id="toc-What's_the_difference_between_categories_and_navigation_templates?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Can_pages_be_in_more_than_one_category?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Can_pages_be_in_more_than_one_category?"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Can pages be in more than one category?</span> </div> </a> <ul id="toc-Can_pages_be_in_more_than_one_category?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_are_"maintenance_categories"?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_are_"maintenance_categories"?"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>What are "maintenance categories"?</span> </div> </a> <ul id="toc-What_are_"maintenance_categories"?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_is_the_naming_convention_for_categories?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_is_the_naming_convention_for_categories?"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>What is the naming convention for categories?</span> </div> </a> <ul id="toc-What_is_the_naming_convention_for_categories?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_do_I_add_an_article_to_a_category?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_do_I_add_an_article_to_a_category?"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>How do I add an article to a category?</span> </div> </a> <ul id="toc-How_do_I_add_an_article_to_a_category?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>How do I reference (link to) a category on a page without categorizing the page?</span> </div> </a> <ul id="toc-How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Where_should_the_category_tag_go_in_the_article?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Where_should_the_category_tag_go_in_the_article?"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Where should the category tag go in the article?</span> </div> </a> <ul id="toc-Where_should_the_category_tag_go_in_the_article?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-In_what_order_should_categories_be_listed_within_the_article?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#In_what_order_should_categories_be_listed_within_the_article?"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>In what order should categories be listed within the article?</span> </div> </a> <ul id="toc-In_what_order_should_categories_be_listed_within_the_article?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_do_I_sort_the_article_differently_on_the_category_page?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_do_I_sort_the_article_differently_on_the_category_page?"> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>How do I sort the article differently on the category page?</span> </div> </a> <ul id="toc-How_do_I_sort_the_article_differently_on_the_category_page?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Which_categories_can_be_used_for_articles_on_people?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Which_categories_can_be_used_for_articles_on_people?"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>Which categories can be used for articles on people?</span> </div> </a> <ul id="toc-Which_categories_can_be_used_for_articles_on_people?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Somebody_changed_my_categorization_–_what_do_I_do?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Somebody_changed_my_categorization_–_what_do_I_do?"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>Somebody changed my categorization – what do I do?</span> </div> </a> <ul id="toc-Somebody_changed_my_categorization_–_what_do_I_do?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_should_I_do_if_I_see_an_article_without_any_categories?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_should_I_do_if_I_see_an_article_without_any_categories?"> <div class="vector-toc-text"> <span class="vector-toc-numb">17</span> <span>What should I do if I see an article without any categories?</span> </div> </a> <ul id="toc-What_should_I_do_if_I_see_an_article_without_any_categories?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-I_am_interested_in_a_category_–_where_can_I_get_involved?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#I_am_interested_in_a_category_–_where_can_I_get_involved?"> <div class="vector-toc-text"> <span class="vector-toc-numb">18</span> <span>I am interested in a category – where can I get involved?</span> </div> </a> <ul id="toc-I_am_interested_in_a_category_–_where_can_I_get_involved?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?"> <div class="vector-toc-text"> <span class="vector-toc-numb">19</span> <span>I want to change the relationships of some categories – will anyone mind?</span> </div> </a> <ul id="toc-I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_do_I_create_a_category?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_do_I_create_a_category?"> <div class="vector-toc-text"> <span class="vector-toc-numb">20</span> <span>How do I create a category?</span> </div> </a> <ul id="toc-How_do_I_create_a_category?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Do_categories_need_parents?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Do_categories_need_parents?"> <div class="vector-toc-text"> <span class="vector-toc-numb">21</span> <span>Do categories need parents?</span> </div> </a> <ul id="toc-Do_categories_need_parents?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Can_categories_be_renamed,_moved,_or_redirected?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Can_categories_be_renamed,_moved,_or_redirected?"> <div class="vector-toc-text"> <span class="vector-toc-numb">22</span> <span>Can categories be renamed, moved, or redirected?</span> </div> </a> <ul id="toc-Can_categories_be_renamed,_moved,_or_redirected?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_do_I_delete_a_category?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_do_I_delete_a_category?"> <div class="vector-toc-text"> <span class="vector-toc-numb">23</span> <span>How do I delete a category?</span> </div> </a> <ul id="toc-How_do_I_delete_a_category?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-When_were_categories_implemented?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#When_were_categories_implemented?"> <div class="vector-toc-text"> <span class="vector-toc-numb">24</span> <span>When were categories implemented?</span> </div> </a> <ul id="toc-When_were_categories_implemented?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Why_might_a_category_list_not_be_up_to_date?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Why_might_a_category_list_not_be_up_to_date?"> <div class="vector-toc-text"> <span class="vector-toc-numb">25</span> <span>Why might a category list not be up to date?</span> </div> </a> <ul id="toc-Why_might_a_category_list_not_be_up_to_date?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_tools_are_there_to_browse_categories?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_tools_are_there_to_browse_categories?"> <div class="vector-toc-text"> <span class="vector-toc-numb">26</span> <span>What tools are there to browse categories?</span> </div> </a> <ul id="toc-What_tools_are_there_to_browse_categories?-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav 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class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Wikipedia</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">FAQ/Categorization</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 7 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-7" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">7 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A7%B1%E0%A6%BF%E0%A6%95%E0%A6%BF%E0%A6%AA%E0%A6%BF%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE:%E0%A6%B8%E0%A6%A4%E0%A6%A4%E0%A7%87_%E0%A6%89%E0%A6%A6%E0%A6%BF%E0%A6%A4_%E0%A6%AA%E0%A7%8D%E0%A7%B0%E0%A6%B6%E0%A7%8D%E0%A6%A8%E0%A6%B8%E0%A6%AE%E0%A7%82%E0%A6%B9/%E0%A6%B6%E0%A7%8D%E0%A7%B0%E0%A7%87%E0%A6%A3%E0%A7%80" title="ৱিকিপিডিয়া:সততে উদিত প্ৰশ্নসমূহ/শ্ৰেণী – Assamese" lang="as" hreflang="as" data-title="ৱিকিপিডিয়া:সততে উদিত প্ৰশ্নসমূহ/শ্ৰেণী" data-language-autonym="অসমীয়া" data-language-local-name="Assamese" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%88%DB%8C%DA%A9%DB%8C%E2%80%8C%D9%BE%D8%AF%DB%8C%D8%A7:%D9%BE%D8%B1%D8%B3%D8%B4%E2%80%8C%D9%87%D8%A7%DB%8C_%D8%B1%D8%A7%DB%8C%D8%AC/%D8%B1%D8%AF%D9%87%E2%80%8C%D8%A8%D9%86%D8%AF%DB%8C" title="ویکی‌پدیا:پرسش‌های رایج/رده‌بندی – Persian" lang="fa" hreflang="fa" data-title="ویکی‌پدیا:پرسش‌های رایج/رده‌بندی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Wikipedia:FAQ/Kategorisasi" title="Wikipedia:FAQ/Kategorisasi – Malay" lang="ms" hreflang="ms" data-title="Wikipedia:FAQ/Kategorisasi" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B5%E0%A8%BF%E0%A8%95%E0%A9%80%E0%A8%AA%E0%A9%80%E0%A8%A1%E0%A9%80%E0%A8%86:FAQ/Categorization" title="ਵਿਕੀਪੀਡੀਆ:FAQ/Categorization – Punjabi" lang="pa" hreflang="pa" data-title="ਵਿਕੀਪੀਡੀਆ:FAQ/Categorization" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%8F:%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D1%8F/FAQ" title="Википедия:Категоризация/FAQ – Russian" lang="ru" hreflang="ru" data-title="Википедия:Категоризация/FAQ" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%80%E0%B7%92%E0%B6%9A%E0%B7%92%E0%B6%B4%E0%B7%93%E0%B6%A9%E0%B7%92%E0%B6%BA%E0%B7%8F:%E0%B6%B1%E0%B7%92%E0%B7%80%E0%B7%92%E0%B6%B4%E0%B7%8A%E2%80%8D%E0%B6%BB/%E0%B6%B4%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B7%80%E0%B6%BB%E0%B7%8A%E0%B6%9C%E0%B6%9A%E0%B6%BB%E0%B6%AB%E0%B6%BA" title="විකිපීඩියා:නිවිප්‍ර/ප්‍රවර්ගකරණය – Sinhala" lang="si" hreflang="si" data-title="විකිපීඩියා:නිවිප්‍ර/ප්‍රවර්ගකරණය" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Vikipedi:SSS/Kategorizasyon" title="Vikipedi:SSS/Kategorizasyon – Turkish" lang="tr" hreflang="tr" data-title="Vikipedi:SSS/Kategorizasyon" data-language-autonym="Türkçe" 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solid #A3B1BF; background:var(--background-color-progressive-subtle, #f1f4fd); color:inherit;"><b>Frequently asked questions (FAQs)</b> <ul><li><a href="/wiki/Wikipedia:FAQ" title="Wikipedia:FAQ">Index of FAQs</a></li> <li><a href="/wiki/Wikipedia:FAQ/Main" title="Wikipedia:FAQ/Main">Main FAQ</a></li> <li><a href="/wiki/Wikipedia:FAQ/Overview" title="Wikipedia:FAQ/Overview">Overview</a></li> <li><a href="/wiki/Wikipedia:FAQ/Readers" title="Wikipedia:FAQ/Readers">Readers</a></li> <li><a href="/wiki/Wikipedia:FAQ/Schools" title="Wikipedia:FAQ/Schools">Schools</a></li> <li><a href="/wiki/Wikipedia:FAQ/Contributing" title="Wikipedia:FAQ/Contributing">Contributing</a></li> <li><a href="/wiki/Wikipedia:FAQ/Editing" title="Wikipedia:FAQ/Editing">Editing</a></li> <li><a href="/wiki/Wikipedia:FAQ/Featured_articles" title="Wikipedia:FAQ/Featured articles">Featured articles</a></li> <li><a href="/wiki/Wikipedia:FAQ/Administrators" title="Wikipedia:FAQ/Administrators">Administrators</a></li> <li><a href="/wiki/Wikipedia:FAQ/Blocks" title="Wikipedia:FAQ/Blocks">Blocks</a></li> <li><a href="/wiki/Wikipedia:FAQ/Technical" title="Wikipedia:FAQ/Technical">Technical</a></li> <li><a href="/wiki/Wikipedia:FAQ/Problems" title="Wikipedia:FAQ/Problems">Problems</a></li> <li><a href="/wiki/Wikipedia:FAQ/Article_subjects" title="Wikipedia:FAQ/Article subjects">Article subjects</a></li> <li><a href="/wiki/Wikipedia:FAQ/Categories" title="Wikipedia:FAQ/Categories">Categories</a></li> <li><a class="mw-selflink selflink">Categorization</a></li> <li><a href="/wiki/Wikipedia:FAQ/Copyright" title="Wikipedia:FAQ/Copyright">Copyright</a></li> <li><a href="/wiki/Wikipedia:FAQ/Forking" title="Wikipedia:FAQ/Forking">Forking</a></li> <li><a href="/wiki/Wikipedia:FAQ/Template" title="Wikipedia:FAQ/Template">Templates</a></li> <li><a href="/wiki/Wikipedia:FAQ/Main_Page" title="Wikipedia:FAQ/Main Page">Main Page</a></li> <li><a href="/wiki/Wikipedia:FAQ/Miscellaneous" title="Wikipedia:FAQ/Miscellaneous">Miscellaneous</a> <div class="mw-inputbox-centered" style=""><form name="searchbox" class="searchbox mw-inputbox-form-inline" action="/wiki/Special:Search"><div class="cdx-text-input"><input class="mw-searchInput searchboxInput cdx-text-input__input" name="search" placeholder="" size="22" dir="ltr"/></div><input type="hidden" value="Wikipedia:FAQ" name="prefix"/> <input type="submit" name="fulltext" value="Search the FAQs" class="cdx-button"/><input type="hidden" value="Search" name="fulltext"/></form></div></li></ul> </div> <p><br/> This page is addressed mainly to those editing Wikipedia. For information for readers, see <a href="/wiki/Wikipedia:FAQ/Categories" title="Wikipedia:FAQ/Categories">Wikipedia:FAQ/Categories</a>. </p><p>For more detailed guidelines on creating and organizing categories, see <a href="/wiki/Help:Category" title="Help:Category">Help:Category</a>. More technical information can be found at <a href="/wiki/Wikipedia:Categorization" title="Wikipedia:Categorization">Wikipedia:Categorization</a>. </p> <meta property="mw:PageProp/toc"/> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_are_categories?" data-mw-thread-id="h-What_are_categories?"><span id="What_are_categories.3F"></span><span data-mw-comment-start="" id="h-What_are_categories?"></span>What are categories?<span data-mw-comment-end="h-What_are_categories?"></span></h2></div> <p>Categories allow articles to be placed in one or more groups, and allow those groups to be further categorized. An article belonging to a category should contain a link to a page that describes the category. Similarly, a sub-category belonging to a parent category should contain a link to the parent category's page. </p><p>Each category page contains an introduction that can be edited like an article, and an automatically generated list of links to sub-categories and articles that belong to the category. </p><p>Categories do not form a strict hierarchy or tree of categories, since each article can appear in more than one category, and each category can appear in more than one parent category. This allows multiple categorization schemes to co-exist. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_is_the_purpose_of_categories?" data-mw-thread-id="h-What_is_the_purpose_of_categories?"><span id="What_is_the_purpose_of_categories.3F"></span><span data-mw-comment-start="" id="h-What_is_the_purpose_of_categories?"></span>What is the purpose of categories?<span data-mw-comment-end="h-What_is_the_purpose_of_categories?"></span></h2></div> <p>See <a href="https://meta.wikimedia.org/wiki/Categorization_requirements" class="extiw" title="meta:Categorization requirements">meta:Categorization requirements</a> for the original purpose of the feature. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_categories_already_exist?" data-mw-thread-id="h-What_categories_already_exist?"><span id="What_categories_already_exist.3F"></span><span data-mw-comment-start="" id="h-What_categories_already_exist?"></span>What categories already exist?<span data-mw-comment-end="h-What_categories_already_exist?"></span></h2></div> <p>The best way to find out what exists is to browse. Either start at <a href="/wiki/Wikipedia:Browse" class="mw-redirect" title="Wikipedia:Browse">Wikipedia:Browse</a> or <a href="/wiki/Category:Articles" title="Category:Articles">Category:Articles</a>, which shows the "top" level categories, to which all other categories should be connected. A list of all categories can be found at <a href="/wiki/Special:Categories" title="Special:Categories">Special:Categories</a> – there are many listed but you can use the search box. <a href="/wiki/Category:Wikipedia_categories" title="Category:Wikipedia categories">Category:Wikipedia categories</a> is the standard top-level category provided by the MediaWiki software, but orphan categories (categories without any parent categories) can exist. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_is_the_difference_between_a_list_and_a_category?" data-mw-thread-id="h-What_is_the_difference_between_a_list_and_a_category?"><span id="What_is_the_difference_between_a_list_and_a_category.3F"></span><span data-mw-comment-start="" id="h-What_is_the_difference_between_a_list_and_a_category?"></span>What is the difference between a list and a category?<span data-mw-comment-end="h-What_is_the_difference_between_a_list_and_a_category?"></span></h2></div> <p>Grouping articles into a category is not the same as making a list of articles. To edit a list of articles, you edit the list directly; but to place articles into a category, you edit an article and insert a category tag by placing [[Category:<category name>]] in the body of the text. This adds those articles as a list on the category's page. </p><p>While an article may be in multiple lists, the goal is that browsing downwards from a list parent category, e.g. <a href="/wiki/Category:People" title="Category:People">Category:People</a>, you should only arrive at articles that are about people, and not related articles. </p><p>Further information on this topic can be found at <a href="/wiki/Wikipedia:Categories,_lists,_and_navigation_templates" title="Wikipedia:Categories, lists, and navigation templates">Wikipedia:Categories, lists, and navigation templates</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Are_"List_of_..."_articles_still_needed?" data-mw-thread-id="h-Are_"List_of_..."_articles_still_needed?"><span id="Are_.22List_of_....22_articles_still_needed.3F"></span><span data-mw-comment-start="" id="h-Are_"List_of_..."_articles_still_needed?"></span>Are "List of ..." articles still needed?<span data-mw-comment-end="h-Are_"List_of_..."_articles_still_needed?"></span></h2></div> <p><a href="/wiki/Wikipedia:Stand-alone_lists" title="Wikipedia:Stand-alone lists">Lists</a> are still useful for showing "missing" articles. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What's_the_difference_between_categories_and_navigation_templates?" data-mw-thread-id="h-What's_the_difference_between_categories_and_navigation_templates?"><span id="What.27s_the_difference_between_categories_and_navigation_templates.3F"></span><span data-mw-comment-start="" id="h-What's_the_difference_between_categories_and_navigation_templates?"></span>What's the difference between categories and navigation templates?<span data-mw-comment-end="h-What's_the_difference_between_categories_and_navigation_templates?"></span></h2></div> <p>John Brown's Raid on Harpers Ferry has an <a href="/wiki/John_Brown%27s_raid_on_Harpers_Ferry" title="John Brown's raid on Harpers Ferry">article</a>, a <a href="/wiki/Category:John_Brown%27s_raid_on_Harpers_Ferry" title="Category:John Brown's raid on Harpers Ferry">category</a>, and a <a href="/wiki/Template:John_Brown%27s_Raid_on_Harpers_Ferry" title="Template:John Brown's Raid on Harpers Ferry">navigation template</a>. </p><p>A <a href="/wiki/Wikipedia:Navigational_template" class="mw-redirect" title="Wikipedia:Navigational template">navigation template</a> is a collection of links on a single topic, formatted in a standard way, in a box with a border. These links can be arranged in different ways within the box. The box is placed at the right or at the foot of the pages linked in it. </p><p>There are fewer navigation templates than categories. There is no requirement that a page be linked in a navigation template, whereas every page must belong to at least one category, and almost always more. </p><p>When appropriate, however, a navigation template organizes links in a far more useful way than categories do. It permits many nuances that categories can not, or can only clumsily. For the reader, a navigation template, if it exists, makes finding related articles much faster. </p><p>Templates are more complicated to create than categories, and the Wikipedian wishing to create one may want to use an existing template as a model. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Can_pages_be_in_more_than_one_category?" data-mw-thread-id="h-Can_pages_be_in_more_than_one_category?"><span id="Can_pages_be_in_more_than_one_category.3F"></span><span data-mw-comment-start="" id="h-Can_pages_be_in_more_than_one_category?"></span>Can pages be in more than one category?<span data-mw-comment-end="h-Can_pages_be_in_more_than_one_category?"></span></h2></div> <p>Yes, it is expected that most pages will be members of one category or more. Similarly, each category can be a member of more than one parent category. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_are_"maintenance_categories"?" data-mw-thread-id="h-What_are_"maintenance_categories"?"><span id="What_are_.22maintenance_categories.22.3F"></span><span data-mw-comment-start="" id="h-What_are_"maintenance_categories"?"></span>What are "maintenance categories"?<span data-mw-comment-end="h-What_are_"maintenance_categories"?"></span></h2></div> <p>Some categories exist to aid maintenance of the project, for example, <a href="/wiki/Wikipedia:Template" class="mw-redirect" title="Wikipedia:Template">template</a> categories and <a href="/wiki/Wikipedia:Redirect" title="Wikipedia:Redirect">redirect</a> categories. Maintenance categories are often added by templates rather than links. Contributors monitor these maintenance categories for many reasons to cleanup articles. Maintenance categories are usually "hidden" from view and can be seen only by registered users who have set their preferences to see hidden categories, which is easy to do: </p> <dl><dd><ol><li>Go to <span class="example" style="font-family: Georgia, serif;"><a href="/wiki/Special:Preferences" title="Special:Preferences">Preferences</a> → <a href="/wiki/Special:Preferences#mw-prefsection-rendering" title="Special:Preferences">Appearance</a></span></li> <li>Scroll down to <b>Advanced options</b></li> <li>Check the box <b>Show hidden categories</b></li> <li>Click <kbd class="nowrap button" title="This is not a clickable button; it illustrates the button one should find." style="padding:.2em .6em; border:1px solid; border-color:var(--border-color-base, #a2a9b1) var(--border-color-interactive, #72777d) var(--border-color-interactive, #72777d) var(--border-color-base, #a2a9b1); border-radius:3px; background-color: #F2F2F2; color: inherit; background-image: linear-gradient(to bottom, var(--background-color-interactive-subtle, #f8f9fa), var(--background-color-interactive, #eaecf0)); font-family:sans-serif;">Save</kbd></li></ol></dd> <dd>It is a good idea to <a href="/wiki/Wikipedia:PURGE" class="mw-redirect" title="Wikipedia:PURGE">purge your browser cache</a> to ensure that you can see hidden categories after setting your preferences.</dd></dl> <p>Templates used to populate redirect categories are indexed functionally and alphanumerically at <a href="/wiki/Wikipedia:Template_messages/Redirect_pages" class="mw-redirect" title="Wikipedia:Template messages/Redirect pages">Wikipedia:Template messages/Redirect pages</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_is_the_naming_convention_for_categories?" data-mw-thread-id="h-What_is_the_naming_convention_for_categories?"><span id="What_is_the_naming_convention_for_categories.3F"></span><span data-mw-comment-start="" id="h-What_is_the_naming_convention_for_categories?"></span>What is the naming convention for categories?<span data-mw-comment-end="h-What_is_the_naming_convention_for_categories?"></span></h2></div> <p>Use the Wikipedia titling conventions of no unnecessary capital letters or abbreviations, i.e. use [[Category:Category examples]] instead of [[Category:Category E.g.]]. </p><p>If the category collects articles, then avoid the word <i>List</i> in the name of the category, and use plurals, e.g. <a href="/wiki/Category:Popes" title="Category:Popes">Category:Popes</a>. </p><p>However, if the category collects <i>lists</i>, then using the word <i>Lists</i> in the name of the category is appropriate, e.g. <a href="/wiki/Category:Lists_of_radio_stations" title="Category:Lists of radio stations">Category:Lists of radio stations</a>. </p><p>Use the topic name without indicating structure, e.g. [[Category:History of London]] instead of [[Category:History - Europe - UK - London]]. </p><p>For more on this, see <a href="/wiki/Wikipedia:Naming_conventions_(categories)" class="mw-redirect" title="Wikipedia:Naming conventions (categories)">Wikipedia:Naming conventions (categories)</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_do_I_add_an_article_to_a_category?" data-mw-thread-id="h-How_do_I_add_an_article_to_a_category?"><span id="How_do_I_add_an_article_to_a_category.3F"></span><span data-mw-comment-start="" id="h-How_do_I_add_an_article_to_a_category?"></span>How do I add an article to a category?<span data-mw-comment-end="h-How_do_I_add_an_article_to_a_category?"></span></h2></div> <p>Edit the article and add [[Category:<i>Category name</i>]] at the bottom of the article. For example: [[Category:Mind-body interventions]]. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?" data-mw-thread-id="h-How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?"><span id="How_do_I_reference_.28link_to.29_a_category_on_a_page_without_categorizing_the_page.3F"></span><span data-mw-comment-start="" id="h-How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?"></span>How do I reference (link to) a category on a page without categorizing the page?<span data-mw-comment-end="h-How_do_I_reference_(link_to)_a_category_on_a_page_without_categorizing_the_page?"></span></h2></div> <p>To link to the category page, put a colon before the word "category", inside the link, e.g.<br/> [[:<i>Category:United States</i>]], which will appear as <a href="/wiki/Category:United_States" title="Category:United States">Category:United States</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Where_should_the_category_tag_go_in_the_article?" data-mw-thread-id="h-Where_should_the_category_tag_go_in_the_article?"><span id="Where_should_the_category_tag_go_in_the_article.3F"></span><span data-mw-comment-start="" id="h-Where_should_the_category_tag_go_in_the_article?"></span>Where should the category tag go in the article?<span data-mw-comment-end="h-Where_should_the_category_tag_go_in_the_article?"></span></h2></div> <p>Category tags should be placed at the bottom of the article, after the appendices (e.g. References and External links). This ensures that when an editor presses "edit", the editor is immediately presented with the main article text, rather than the more esoteric category tags. It also ensures that the category tags are in a consistent place so they are easy to find. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="In_what_order_should_categories_be_listed_within_the_article?" data-mw-thread-id="h-In_what_order_should_categories_be_listed_within_the_article?"><span id="In_what_order_should_categories_be_listed_within_the_article.3F"></span><span data-mw-comment-start="" id="h-In_what_order_should_categories_be_listed_within_the_article?"></span>In what order should categories be listed within the article?<span data-mw-comment-end="h-In_what_order_should_categories_be_listed_within_the_article?"></span></h2></div> <p>Both the alphabet and importance are used to order categories currently. Although this, like most ordering issues in Wikipedia, is a matter for judgment, it is generally clear that some categories – for example the birthplace or birth year of a person – are less important than others, such as their status as an Oscar or Nobel Prize winner. </p><p>See also <a href="/wiki/Wikipedia:Overcategorization" title="Wikipedia:Overcategorization">Wikipedia:Overcategorization</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_do_I_sort_the_article_differently_on_the_category_page?" data-mw-thread-id="h-How_do_I_sort_the_article_differently_on_the_category_page?"><span id="How_do_I_sort_the_article_differently_on_the_category_page.3F"></span><span data-mw-comment-start="" id="h-How_do_I_sort_the_article_differently_on_the_category_page?"></span>How do I sort the article differently on the category page?<span data-mw-comment-end="h-How_do_I_sort_the_article_differently_on_the_category_page?"></span></h2></div> <p>Use a <span class="nowrap">{{</span><a href="/wiki/Template:DEFAULTSORT" title="Template:DEFAULTSORT">DEFAULTSORT</a><span class="nowrap">}}</span> tag, which looks like {{DEFAULTSORT:Smith, John}}. All categories will then sort under "Smith" unless a <a href="/wiki/Wikipedia:SORTKEY" class="mw-redirect" title="Wikipedia:SORTKEY">sorting key</a> is used for them (see below). </p><p>For individual categories, use a <a href="/wiki/Wikipedia:SORTKEY" class="mw-redirect" title="Wikipedia:SORTKEY">sorting key</a>. For example, an article categorized by <code>[[Category:Proper category|Sorting key]]</code> would appear under S within the category. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Which_categories_can_be_used_for_articles_on_people?" data-mw-thread-id="h-Which_categories_can_be_used_for_articles_on_people?"><span id="Which_categories_can_be_used_for_articles_on_people.3F"></span><span data-mw-comment-start="" id="h-Which_categories_can_be_used_for_articles_on_people?"></span>Which categories can be used for articles on people?<span data-mw-comment-end="h-Which_categories_can_be_used_for_articles_on_people?"></span></h2></div> <p>Articles about people should be categorized cautiously. Unlike the body of the article, the various category choices for people can focus on, in most cases, what are common and unrelated attributes such as place of birth and gender, instead of emphasising the reason for their inclusion. </p><p>See <a href="/wiki/Wikipedia:Categorization_of_people" class="mw-redirect" title="Wikipedia:Categorization of people">Wikipedia:Categorization of people</a> for guidelines. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Somebody_changed_my_categorization_–_what_do_I_do?" data-mw-thread-id="h-Somebody_changed_my_categorization_–_what_do_I_do?"><span id="Somebody_changed_my_categorization_.E2.80.93_what_do_I_do.3F"></span><span data-mw-comment-start="" id="h-Somebody_changed_my_categorization_–_what_do_I_do?"></span>Somebody changed my categorization – what do I do?<span data-mw-comment-end="h-Somebody_changed_my_categorization_–_what_do_I_do?"></span></h2></div> <p>All contributions to Wikipedia may be "edited mercilessly". If the change was not explained in the article history or <a href="/wiki/Wikipedia:Talk_page" class="mw-redirect" title="Wikipedia:Talk page">talk page</a>, try leaving a question on the relevant user's talk page. Remember to follow the <a href="/wiki/Wikipedia:BRD" class="mw-redirect" title="Wikipedia:BRD">bold, revert, discuss</a> procedure. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_should_I_do_if_I_see_an_article_without_any_categories?" data-mw-thread-id="h-What_should_I_do_if_I_see_an_article_without_any_categories?"><span id="What_should_I_do_if_I_see_an_article_without_any_categories.3F"></span><span data-mw-comment-start="" id="h-What_should_I_do_if_I_see_an_article_without_any_categories?"></span>What should I do if I see an article without any categories?<span data-mw-comment-end="h-What_should_I_do_if_I_see_an_article_without_any_categories?"></span></h2></div> <p>Try to categorize it yourself. If you are unable to, add the <code><span class="nowrap">{{</span><a href="/wiki/Template:Uncategorized" title="Template:Uncategorized">Uncategorized</a><span class="nowrap">}}</span></code> template to the article, which will place a notice that the article needs categorizing, and automatically add it to the list at <a href="/wiki/Category:Uncategorized_pages" title="Category:Uncategorized pages">Category:Uncategorized pages</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="I_am_interested_in_a_category_–_where_can_I_get_involved?" data-mw-thread-id="h-I_am_interested_in_a_category_–_where_can_I_get_involved?"><span id="I_am_interested_in_a_category_.E2.80.93_where_can_I_get_involved.3F"></span><span data-mw-comment-start="" id="h-I_am_interested_in_a_category_–_where_can_I_get_involved?"></span>I am interested in a category – where can I get involved?<span data-mw-comment-end="h-I_am_interested_in_a_category_–_where_can_I_get_involved?"></span></h2></div> <p>If there is one, you can join the <a href="/wiki/Wikipedia:WikiProject" title="Wikipedia:WikiProject">WikiProject</a> involved. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?" data-mw-thread-id="h-I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?"><span id="I_want_to_change_the_relationships_of_some_categories_.E2.80.93_will_anyone_mind.3F"></span><span data-mw-comment-start="" id="h-I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?"></span>I want to change the relationships of some categories – will anyone mind?<span data-mw-comment-end="h-I_want_to_change_the_relationships_of_some_categories_–_will_anyone_mind?"></span></h2></div> <p>If you want to restructure some existing categories, it is best to discuss your plans with others working in the same areas, or at least to announce your intentions. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_do_I_create_a_category?" data-mw-thread-id="h-How_do_I_create_a_category?"><span id="How_do_I_create_a_category.3F"></span><span data-mw-comment-start="" id="h-How_do_I_create_a_category?"></span>How do I create a category?<span data-mw-comment-end="h-How_do_I_create_a_category?"></span></h2></div> <p>A category page should contain a brief description of the purpose of the category. A prominent link to the most important article in the category is usually a good idea, but please avoid copying large quantities of text or images from an article to a category page. </p><p><span class="anchor" id="cat_main"></span>In many cases, a category has a "main article", which describes the subject of that category. The category and the article often have the same name. In such case, do this: </p> <ul><li>Add the "{{cat main}}" tag in the category.</li> <li>Arrange for the article to appear at the <i>top</i> of the list of articles in the category, by putting a vertical bar and a space after the category name in the Category: tag (e.g. [[Category:<category name>| ]]).</li></ul> <p>If the subject has count, then make the category name plural and create a redirect of that same, plural name, redirecting back to the singular name. For instance <a href="/wiki/City" title="City">City</a> and <a href="/wiki/Category:Cities" title="Category:Cities">Category:Cities</a>. That is, create a page called "Cities" and add the line </p> <pre>#REDIRECT [[City]] </pre> <p>In theory, if a main article is categorized correctly in its corresponding category, the use of the cat main template is redundant. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Do_categories_need_parents?" data-mw-thread-id="h-Do_categories_need_parents?"><span id="Do_categories_need_parents.3F"></span><span data-mw-comment-start="" id="h-Do_categories_need_parents?"></span>Do categories need parents?<span data-mw-comment-end="h-Do_categories_need_parents?"></span></h2></div> <p>Yes. If you are creating a new category, look for a suitable "parent" category (or several) to assign it to. A good place to look is in articles on related subjects. </p><p>If you do not have a parent category, then your category cannot be browsed to via other categories. Also, your category will show up on <a href="/wiki/Wikipedia:Database_reports/Uncategorized_categories" title="Wikipedia:Database reports/Uncategorized categories">Wikipedia:Database reports/Uncategorized categories</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Can_categories_be_renamed,_moved,_or_redirected?" data-mw-thread-id="h-Can_categories_be_renamed,_moved,_or_redirected?"><span id="Can_categories_be_renamed.2C_moved.2C_or_redirected.3F"></span><span data-mw-comment-start="" id="h-Can_categories_be_renamed,_moved,_or_redirected?"></span>Can categories be renamed, moved, or redirected?<span data-mw-comment-end="h-Can_categories_be_renamed,_moved,_or_redirected?"></span></h2></div> <style data-mw-deduplicate="TemplateStyles:r1252059228">.mw-parser-output .module-shortcutboxplain{float:right;margin:0 0 0 1em;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-base,#fff);padding:0.3em 0.6em 0.2em 0.6em;text-align:center;font-size:85%}.mw-parser-output .module-shortcutboxleft{float:left;margin:0 1em 0 0}.mw-parser-output .module-shortcutlist{display:inline-block;border-bottom:1px solid var(--border-color-base,#a2a9b1);margin-bottom:0.2em}.mw-parser-output .module-shortcutboxplain ul{font-weight:bold}.mw-parser-output .module-shortcutanchordiv{position:relative;top:-3em}.mw-parser-output li .module-shortcutanchordiv{float:right}.mw-parser-output .mbox-imageright .module-shortcutboxplain{padding:0.4em 1em 0.4em 1em;line-height:1.3;margin:0}</style><div class="module-shortcutanchordiv"><span id="WP:CMOVE"></span></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:CMOVE&redirect=no">WP:CMOVE</a></span></li></ul></div></div> <p>Yes, "speedy renaming" can be done by listing the category at <a href="/wiki/Wikipedia:Categories_for_discussion#Speedy_renaming" title="Wikipedia:Categories for discussion">Wikipedia:Categories for discussion#Speedy renaming</a>. See <a href="/wiki/Wikipedia:Category_deletion_policy#Speedy_renaming_procedure" class="mw-redirect" title="Wikipedia:Category deletion policy">Wikipedia:Category deletion policy#Speedy renaming procedure</a>. </p><p>Redirects in the form #REDIRECT [[Category:New name]] are not recommended in category space. Instead, use the template <span class="nowrap">{{</span><a href="/wiki/Template:Category_redirect" title="Template:Category redirect">Category redirect</a><span class="nowrap">}}</span>: a bot periodically recategorizes articles in the redirected category to the target category. Any editor can add a category redirect although, in general, established categories should not be unilaterally redirected but should be taken to <a href="/wiki/Wikipedia:Categories_for_discussion" title="Wikipedia:Categories for discussion">Wikipedia:Categories for discussion</a> to suggest redirecting as part of a rename / merger of the category. </p><p>Categories can be moved. The old page will have {{<a href="/wiki/Template:Category_redirect" title="Template:Category redirect">Category redirect</a>|New name}} instead of #REDIRECT [[:Category:New name]]. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_do_I_delete_a_category?" data-mw-thread-id="h-How_do_I_delete_a_category?"><span id="How_do_I_delete_a_category.3F"></span><span data-mw-comment-start="" id="h-How_do_I_delete_a_category?"></span>How do I delete a category?<span data-mw-comment-end="h-How_do_I_delete_a_category?"></span></h2></div> <p>If you feel a category falls within <a href="/wiki/Wikipedia:Category_deletion_policy" class="mw-redirect" title="Wikipedia:Category deletion policy">Wikipedia:Category deletion policy</a>, bring it up on <a href="/wiki/Wikipedia:Categories_for_discussion" title="Wikipedia:Categories for discussion">Wikipedia:Categories for discussion</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="When_were_categories_implemented?" data-mw-thread-id="h-When_were_categories_implemented?"><span id="When_were_categories_implemented.3F"></span><span data-mw-comment-start="" id="h-When_were_categories_implemented?"></span>When were categories implemented?<span data-mw-comment-end="h-When_were_categories_implemented?"></span></h2></div> <p>The category feature appeared in the <a href="/wiki/MediaWiki" title="MediaWiki">MediaWiki</a> software <a href="/wiki/Wikipedia:Mediawiki_1.3" title="Wikipedia:Mediawiki 1.3">v1.3</a>, which was implemented on Wikipedia in late May 2004. </p><p>Initially categories were displayed at the top right of articles, but they were soon moved to the bottom due to layout conflicts. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Why_might_a_category_list_not_be_up_to_date?" data-mw-thread-id="h-Why_might_a_category_list_not_be_up_to_date?"><span id="Why_might_a_category_list_not_be_up_to_date.3F"></span><span data-mw-comment-start="" id="h-Why_might_a_category_list_not_be_up_to_date?"></span>Why might a category list not be up to date?<span data-mw-comment-end="h-Why_might_a_category_list_not_be_up_to_date?"></span></h2></div> <p>Sometimes, pages are not placed in categories manually by Wikipedia editors, but by means of <a href="/wiki/Wikipedia:Templates" title="Wikipedia:Templates">templates</a>, which can be used to place identical information (including category membership information) on many different pages at once. When the information on such a template is edited, the pages containing that template are updated, but not necessarily updated immediately. This means that pages might not always appear in the most current categories. However, this problem usually affects project maintenance categories rather than the categories used for browsing. </p><p>Various other delays sometimes mean that lists of category members or subcategories, or the page counts given, are not completely up to date (see Phabricator tickets <a href="https://phabricator.wikimedia.org/T18036" class="extiw" title="phabricator:T18036">T18036</a>, <a href="https://phabricator.wikimedia.org/T132467" class="extiw" title="phabricator:T132467">T132467</a>, and <a href="https://phabricator.wikimedia.org/T157670" class="extiw" title="phabricator:T157670">T157670</a> for technical details). So if you are editing Wikipedia and find that your page hasn't yet shown up in a category or hasn't yet been removed from an old category, don't panic! The problem may resolve itself within minutes, but sometimes it may take longer, in some cases days, even months. (It may help if you <a href="/wiki/Wikipedia:Purge" class="mw-redirect" title="Wikipedia:Purge">purge</a> the page.) </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="What_tools_are_there_to_browse_categories?" data-mw-thread-id="h-What_tools_are_there_to_browse_categories?"><span id="What_tools_are_there_to_browse_categories.3F"></span><span data-mw-comment-start="" id="h-What_tools_are_there_to_browse_categories?"></span>What tools are there to browse categories?<span data-mw-comment-end="h-What_tools_are_there_to_browse_categories?"></span></h2></div> <p><a rel="nofollow" class="external text" href="https://petscan.wmflabs.org/">PetScan</a> is a powerful querying tool that, among other tasks, can scan categories, selecting pages on many categories. </p><p><br/> </p><p><br/> </p> <hr/> <p><b>More FAQ topics</b> </p> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist nowraplinks" style="text-align:center; padding:4px 1em; border:1px solid #A3B1BF; background:var(--background-color-progressive-subtle, #f1f4fd); color:inherit;"><b>Frequently asked questions (FAQs)</b> <ul><li><a href="/wiki/Wikipedia:FAQ" title="Wikipedia:FAQ">Index of FAQs</a></li> <li><a href="/wiki/Wikipedia:FAQ/Main" title="Wikipedia:FAQ/Main">Main FAQ</a></li> <li><a href="/wiki/Wikipedia:FAQ/Overview" title="Wikipedia:FAQ/Overview">Overview</a></li> <li><a href="/wiki/Wikipedia:FAQ/Readers" title="Wikipedia:FAQ/Readers">Readers</a></li> <li><a href="/wiki/Wikipedia:FAQ/Schools" title="Wikipedia:FAQ/Schools">Schools</a></li> <li><a href="/wiki/Wikipedia:FAQ/Contributing" title="Wikipedia:FAQ/Contributing">Contributing</a></li> <li><a href="/wiki/Wikipedia:FAQ/Editing" title="Wikipedia:FAQ/Editing">Editing</a></li> <li><a href="/wiki/Wikipedia:FAQ/Featured_articles" title="Wikipedia:FAQ/Featured articles">Featured articles</a></li> <li><a href="/wiki/Wikipedia:FAQ/Administrators" title="Wikipedia:FAQ/Administrators">Administrators</a></li> <li><a href="/wiki/Wikipedia:FAQ/Blocks" title="Wikipedia:FAQ/Blocks">Blocks</a></li> <li><a href="/wiki/Wikipedia:FAQ/Technical" title="Wikipedia:FAQ/Technical">Technical</a></li> <li><a href="/wiki/Wikipedia:FAQ/Problems" title="Wikipedia:FAQ/Problems">Problems</a></li> <li><a href="/wiki/Wikipedia:FAQ/Article_subjects" title="Wikipedia:FAQ/Article subjects">Article subjects</a></li> <li><a href="/wiki/Wikipedia:FAQ/Categories" title="Wikipedia:FAQ/Categories">Categories</a></li> <li><a class="mw-selflink selflink">Categorization</a></li> <li><a href="/wiki/Wikipedia:FAQ/Copyright" title="Wikipedia:FAQ/Copyright">Copyright</a></li> <li><a href="/wiki/Wikipedia:FAQ/Forking" title="Wikipedia:FAQ/Forking">Forking</a></li> <li><a href="/wiki/Wikipedia:FAQ/Template" title="Wikipedia:FAQ/Template">Templates</a></li> <li><a href="/wiki/Wikipedia:FAQ/Main_Page" title="Wikipedia:FAQ/Main Page">Main Page</a></li> <li><a href="/wiki/Wikipedia:FAQ/Miscellaneous" title="Wikipedia:FAQ/Miscellaneous">Miscellaneous</a> <div class="mw-inputbox-centered" style=""><form name="searchbox" class="searchbox mw-inputbox-form-inline" action="/wiki/Special:Search"><div class="cdx-text-input"><input class="mw-searchInput searchboxInput cdx-text-input__input" name="search" placeholder="" size="22" dir="ltr"/></div><input type="hidden" value="Wikipedia:FAQ" name="prefix"/> <input type="submit" name="fulltext" value="Search the FAQs" class="cdx-button"/><input type="hidden" value="Search" name="fulltext"/></form></div></li></ul> </div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Wikipedia_categorization" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Wikipedia_categorization_navbox" title="Template:Wikipedia categorization navbox"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Wikipedia_categorization_navbox" title="Template talk:Wikipedia categorization navbox"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Wikipedia_categorization_navbox" title="Special:EditPage/Template:Wikipedia categorization navbox"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Wikipedia_categorization" style="font-size:114%;margin:0 4em">Wikipedia categorization</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Guidelines</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Categorization" title="Wikipedia:Categorization">Categorization</a></li> <li><a href="/wiki/Wikipedia:Category_names" title="Wikipedia:Category names">Category names</a></li> <li><a href="/wiki/Wikipedia:Categories,_lists,_and_navigation_templates" title="Wikipedia:Categories, lists, and navigation templates">Categories, lists, and navigation templates</a></li> <li><a href="/wiki/Wikipedia:Overcategorization" title="Wikipedia:Overcategorization">Overcategorization</a></li> <li><a href="/wiki/Wikipedia:Categorizing_articles_about_people" title="Wikipedia:Categorizing articles about people">Categorizing articles about people</a></li> <li><a href="/wiki/Wikipedia:People_by_year" title="Wikipedia:People by year">People by year</a></li> <li><a href="/wiki/Wikipedia:Categorization/Sorting_names" title="Wikipedia:Categorization/Sorting names">Categorization/Sorting names</a></li> <li><a href="/wiki/Wikipedia:Categorizing_redirects" title="Wikipedia:Categorizing redirects">Categorizing redirects</a></li> <li><a href="/wiki/Wikipedia:User_categories" title="Wikipedia:User categories">User categories</a></li> <li><a href="/wiki/Wikipedia:Overcategorization/User_categories" title="Wikipedia:Overcategorization/User categories">Overcategorization/User categories</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Help pages</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Help:Categories" title="Help:Categories">Basic help for readers</a></li> <li><a href="/wiki/Help:Category" title="Help:Category">Basic help for editors</a></li> <li><a href="/wiki/Wikipedia:FAQ/Categories" title="Wikipedia:FAQ/Categories">FAQ for readers</a></li> <li><a class="mw-selflink selflink">FAQ for editors</a></li> <li><a href="/wiki/Wikipedia:Container_category" title="Wikipedia:Container category">Container categories</a></li> <li><a href="/wiki/Wikipedia:Categorizing_portals" title="Wikipedia:Categorizing portals">Categorizing portals</a></li> <li><a href="/wiki/Wikipedia:Category_classification_templates" title="Wikipedia:Category classification templates">Category classification templates</a></li> <li><a href="/wiki/Wikipedia:Template_index/Category_namespace" title="Wikipedia:Template index/Category namespace">Template index/Category namespace</a></li> <li><a href="/wiki/Wikipedia:PetScan" title="Wikipedia:PetScan">PetScan</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Discussions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Categories_for_discussion" title="Wikipedia:Categories for discussion">Categories for discussion</a></li> <li><a href="/wiki/Wikipedia:Categories_for_discussion/Speedy" title="Wikipedia:Categories for discussion/Speedy">Categories for discussion/Speedy</a></li> <li><a href="/wiki/Wikipedia:Categories_for_discussion/All_current_discussions" title="Wikipedia:Categories for discussion/All current discussions">Categories for discussion/All current discussions</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Projectspace essays</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Categories_are_different_from_articles" title="Wikipedia:Categories are different from articles">Categories are different from articles</a></li> <li><a href="/wiki/Wikipedia:Categories_versus_lists" title="Wikipedia:Categories versus lists">Categories versus lists</a></li> <li><a href="/wiki/Wikipedia:Categorising_fictional_characters_by_attribute" title="Wikipedia:Categorising fictional characters by attribute">Categorising fictional characters by attribute</a></li> <li><a href="/wiki/Wikipedia:Do_not_write_articles_using_categories" title="Wikipedia:Do not write articles using categories">Do not write articles using categories</a></li> <li><a href="/wiki/Wikipedia:Overcategorization/Intersection_of_location_and_occupation" title="Wikipedia:Overcategorization/Intersection of location and occupation">Overcategorization/Intersection of location and occupation</a></li> <li><a href="/wiki/Wikipedia:Wiki_workflow" title="Wikipedia:Wiki workflow">Wiki workflow</a></li> <li><a href="/wiki/Wikipedia:WikiProject_Plants/Description_in_year_categories" title="Wikipedia:WikiProject Plants/Description in year categories">WikiProject Plants/Description in year categories</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Userspace essays</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/User:DexDor/Terminology_categories" title="User:DexDor/Terminology categories">DexDor/Terminology categories</a></li> <li><a href="/wiki/User:DexDor/Categorization_of_award_recipients" title="User:DexDor/Categorization of award recipients">DexDor/Categorization of award recipients</a></li> <li><a href="/wiki/User:Alan_Liefting/Essays/On_categorisation" title="User:Alan Liefting/Essays/On categorisation">Alan Liefting/On categorisation</a></li> <li><a href="/wiki/User:Coder_Dan/Categories" title="User:Coder Dan/Categories">Coder Dan/Categories</a></li> <li><a href="/wiki/User:Gracefool/What_is_a_category%3F" title="User:Gracefool/What is a category?">gracefool/What is a category?</a></li> <li><a href="/wiki/User:Kbdank71/Wikiproject_notification" title="User:Kbdank71/Wikiproject notification">Kbdank71/Wikiproject notification</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight: bold;"><div> <ul><li><a href="/wiki/Category:Wikipedia_categorization" title="Category:Wikipedia categorization">Category:Wikipedia categorization</a></li> <li><a href="/wiki/Category:Contents" title="Category:Contents">Category:Contents</a></li> <li><a href="/wiki/Wikipedia:WikiProject_Categories" title="Wikipedia:WikiProject Categories">WikiProject Categories</a></li></ul> </div></td></tr></tbody></table></div> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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