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</ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="vector-tab-noicon mw-list-item"><a href="/wiki/Portada" class="mw-redirect"><span>Read</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Portada&veaction=edit" title="Edit this page [v]" accesskey="v"><span>Edit</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Portada&action=edit" title="Edit the source code of this page [e]" accesskey="e"><span>Edit source</span></a></li><li id="ca-history" class="selected vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Portada&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="vector-more-collapsible-item mw-list-item"><a href="/wiki/Portada" class="mw-redirect"><span>Read</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Portada&veaction=edit" title="Edit this page [v]" accesskey="v"><span>Edit</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Portada&action=edit" title="Edit the source code of this page [e]" accesskey="e"><span>Edit source</span></a></li><li id="ca-more-history" class="selected vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Portada&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Portada" title="A list of all wiki pages that link here [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Portada" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="feedlinks" class="mw-list-item"><a href="/w/index.php?title=Portada&feed=atom&action=history" id="feed-atom" rel="alternate" type="application/atom+xml" class="feedlink" title="Atom feed for this page"><span>Atom</span></a></li><li id="t-upload" class="mw-list-item"><a href="//commons.wikimedia.org/wiki/Special:UploadWizard?uselang=en" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Portada&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikibooks.org%2Fw%2Findex.php%3Ftitle%3DPortada%26action%3Dhistory"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikibooks.org%2Fw%2Findex.php%3Ftitle%3DPortada%26action%3Dhistory"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-sister_projects" class="vector-menu mw-portlet mw-portlet-sister_projects" > <div class="vector-menu-heading"> Sister projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-Wikipedia" class="mw-list-item"><a href="https://en.wikipedia.org/wiki/Main_Page"><span>Wikipedia</span></a></li><li id="n-Wikiversity" class="mw-list-item"><a href="https://en.wikiversity.org/wiki/Wikiversity:Main_Page"><span>Wikiversity</span></a></li><li id="n-Wiktionary" class="mw-list-item"><a href="https://en.wiktionary.org/wiki/Wiktionary:Main_Page"><span>Wiktionary</span></a></li><li id="n-Wikiquote" class="mw-list-item"><a href="https://en.wikiquote.org/wiki/Main_Page"><span>Wikiquote</span></a></li><li id="n-Wikisource" class="mw-list-item"><a href="https://en.wikisource.org/wiki/Main_Page"><span>Wikisource</span></a></li><li id="n-Wikinews" class="mw-list-item"><a href="https://en.wikinews.org/wiki/Main_Page"><span>Wikinews</span></a></li><li id="n-Wikivoyage" class="mw-list-item"><a href="https://en.wikivoyage.org/wiki/Main_Page"><span>Wikivoyage</span></a></li><li id="n-Commons" class="mw-list-item"><a href="https://commons.wikimedia.org/wiki/Main_Page"><span>Commons</span></a></li><li id="n-Wikidata" class="mw-list-item"><a href="https://www.wikidata.org/wiki/Wikidata:Main_Page"><span>Wikidata</span></a></li><li id="n-MediaWiki" class="mw-list-item"><a href="https://www.mediawiki.org/wiki/Main_Page"><span>MediaWiki</span></a></li><li id="n-Meta-Wiki" class="mw-list-item"><a href="https://meta.wikimedia.org/wiki/Main_Page"><span>Meta-Wiki</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects emptyPortlet" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> </div> <div id="contentSub"><div id="mw-content-subtitle"><div class="mw-history-subtitle"><a href="/w/index.php?title=Special:Log&page=Portada" title="Special:Log">View logs for this page</a></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class='mw-htmlform-ooui-wrapper oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-padded oo-ui-panelLayout-framed'><form id='mw-history-searchform' action='/w/index.php' method='get' enctype='application/x-www-form-urlencoded' class='mw-htmlform mw-htmlform-ooui oo-ui-layout oo-ui-formLayout'><fieldset id='mw-history-search' class='oo-ui-layout oo-ui-labelElement oo-ui-fieldsetLayout mw-collapsibleFieldsetLayout mw-collapsible mw-collapsed'><legend role='button' class='oo-ui-fieldsetLayout-header mw-collapsible-toggle'><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon'></span><span class='oo-ui-labelElement-label'>Filter revisions</span><span class='oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-expand oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'>Expand</span><span class='oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-collapse oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget'>Collapse</span></legend><div class='oo-ui-fieldsetLayout-group mw-collapsible-content'><div class='oo-ui-widget oo-ui-widget-enabled'><input type="hidden" value="Portada" name="title"> <div data-mw-modules='mediawiki.widgets.DateInputWidget' id='ooui-php-6' class='mw-htmlform-field-HTMLDateTimeField mw-htmlform-datetime-field mw-htmlform-autoinfuse oo-ui-layout oo-ui-labelElement oo-ui-fieldLayout oo-ui-fieldLayout-align-top' data-ooui='{"_":"mw.htmlform.FieldLayout","fieldWidget":{"tag":"mw-input-date-range-to"},"align":"top","helpInline":true,"$overlay":true,"label":{"html":"To date:"},"classes":["mw-htmlform-field-HTMLDateTimeField"," mw-htmlform-datetime-field","mw-htmlform-autoinfuse"]}'><div class='oo-ui-fieldLayout-body'><span class='oo-ui-fieldLayout-header'><label for='ooui-php-2' class='oo-ui-labelElement-label'>To date:</label></span><div class='oo-ui-fieldLayout-field'><div id='mw-input-date-range-to' class='oo-ui-widget oo-ui-widget-enabled oo-ui-inputWidget oo-ui-textInputWidget oo-ui-textInputWidget-type-text oo-ui-textInputWidget-php mw-widget-dateInputWidget' data-ooui='{"_":"mw.widgets.DateInputWidget","longDisplayFormat":false,"precision":"day","$overlay":true,"placeholder":"YYYY-MM-DD","name":"date-range-to","inputId":"ooui-php-2","required":false}'><input type='date' tabindex='0' name='date-range-to' value='' placeholder='YYYY-MM-DD' id='ooui-php-2' class='oo-ui-inputWidget-input' /><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon'></span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator'></span></div></div></div></div><div id='ooui-php-7' class='mw-htmlform-field-HTMLTagFilter mw-htmlform-autoinfuse oo-ui-layout oo-ui-labelElement oo-ui-fieldLayout oo-ui-fieldLayout-align-top' data-ooui='{"_":"mw.htmlform.FieldLayout","fieldWidget":{"tag":"tagfilter"},"align":"top","helpInline":true,"$overlay":true,"label":{"html":"<a href=\"\/wiki\/Special:Tags\" title=\"Special:Tags\">Tag<\/a> filter:"},"classes":["mw-htmlform-field-HTMLTagFilter","mw-htmlform-autoinfuse"]}'><div class='oo-ui-fieldLayout-body'><span class='oo-ui-fieldLayout-header'><label for='ooui-php-4' class='oo-ui-labelElement-label'><a href="/wiki/Special:Tags" title="Special:Tags">Tag</a> filter:</label></span><div class='oo-ui-fieldLayout-field'><div id='tagfilter' class='oo-ui-widget oo-ui-widget-enabled oo-ui-inputWidget oo-ui-textInputWidget oo-ui-textInputWidget-type-text oo-ui-textInputWidget-php oo-ui-comboBoxInputWidget oo-ui-comboBoxInputWidget-php' data-ooui='{"_":"OO.ui.ComboBoxInputWidget","options":[{"data":"visualeditor-wikitext","label":"2017 source edit"},{"data":"advanced mobile edit","label":"Advanced mobile edit"},{"data":"android app edit","label":"Android app edit"},{"data":"ASCII text added","label":"ASCII text added"},{"data":"mw-blank","label":"Blanking"},{"data":"abusefilter-condition-limit","label":"condition limit reached"},{"data":"mw-contentmodelchange","label":"content model change"},{"data":"OAuth CID: 1904","label":"DiBabel [1.2]"},{"data":"disambiguator-link-added","label":"Disambiguation links"},{"data":"discussiontools","label":"discussiontools (hidden tag)"},{"data":"discussiontools-added-comment","label":"discussiontools-added-comment (hidden tag)"},{"data":"discussiontools-source","label":"discussiontools-source (hidden tag)"},{"data":"discussiontools-source-enhanced","label":"discussiontools-source-enhanced (hidden tag)"},{"data":"discussiontools-visual","label":"discussiontools-visual (hidden tag)"},{"data":"emoji","label":"Emoji"},{"data":"possible link spam","label":"external link added"},{"data":"ios app edit","label":"iOS app edit"},{"data":"IP edit to a userpage","label":"IP userpage edit"},{"data":"mw-manual-revert","label":"Manual revert"},{"data":"massmessage-delivery","label":"MassMessage delivery"},{"data":"meta spam id","label":"meta spam id"},{"data":"mobile app edit","label":"Mobile app edit"},{"data":"mobile edit","label":"Mobile edit"},{"data":"mobile web edit","label":"Mobile web edit"},{"data":"new blank article","label":"new blank article"},{"data":"mw-new-redirect","label":"New redirect"},{"data":"discussiontools-newtopic","label":"New topic"},{"data":"Ntsamr spambot","label":"Ntsamr spambot"},{"data":"OTRS permission added by non-OTRS member","label":"OTRS permission added by non-OTRS member"},{"data":"OAuth CID: 429","label":"PAWS [1.2]"},{"data":"adding email address","label":"possible email address"},{"data":"possible vandalism","label":"possible vandalism"},{"data":"mw-changed-redirect-target","label":"Redirect target changed"},{"data":"rmallcat","label":"removed all categories"},{"data":"mw-removed-redirect","label":"Removed redirect"},{"data":"repeating characters","label":"repeating characters"},{"data":"mw-replace","label":"Replaced"},{"data":"discussiontools-reply","label":"Reply"},{"data":"mw-reverted","label":"Reverted"},{"data":"mw-rollback","label":"Rollback"},{"data":"shouting","label":"shouting"},{"data":"OAuth CID: 1188","label":"SWViewer [1.0]"},{"data":"OAuth CID: 1261","label":"SWViewer [1.2]"},{"data":"OAuth CID: 1352","label":"SWViewer [1.3]"},{"data":"OAuth CID: 1805","label":"SWViewer [1.4]"},{"data":"OAuth CID: 6365","label":"SWViewer [1.6]"},{"data":"mw-undo","label":"Undo"},{"data":"unusual redirect","label":"unusual redirect"},{"data":"visualeditor","label":"Visual edit"},{"data":"visualeditor-switched","label":"Visual edit: Switched"},{"data":"wikieditor","label":"wikieditor (hidden tag)"}],"$overlay":true,"name":"tagfilter","inputId":"ooui-php-4","required":false}'><input type='text' tabindex='0' name='tagfilter' value='' list='ooui-php-3' id='ooui-php-4' class='oo-ui-inputWidget-input' /><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon'></span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator'></span><span class='oo-ui-widget oo-ui-widget-enabled oo-ui-indicatorElement-indicator oo-ui-indicator-down oo-ui-indicatorElement oo-ui-labelElement-invisible oo-ui-indicatorWidget'></span><datalist id='ooui-php-3'><option value='visualeditor-wikitext'>2017 source edit</option><option value='advanced mobile edit'>Advanced mobile edit</option><option value='android app edit'>Android app edit</option><option value='ASCII text added'>ASCII text added</option><option value='mw-blank'>Blanking</option><option value='abusefilter-condition-limit'>condition limit reached</option><option value='mw-contentmodelchange'>content model change</option><option value='OAuth CID: 1904'>DiBabel [1.2]</option><option value='disambiguator-link-added'>Disambiguation links</option><option value='discussiontools'>discussiontools (hidden tag)</option><option value='discussiontools-added-comment'>discussiontools-added-comment (hidden tag)</option><option value='discussiontools-source'>discussiontools-source (hidden tag)</option><option value='discussiontools-source-enhanced'>discussiontools-source-enhanced (hidden tag)</option><option value='discussiontools-visual'>discussiontools-visual (hidden tag)</option><option value='emoji'>Emoji</option><option value='possible link spam'>external link added</option><option value='ios app edit'>iOS app edit</option><option value='IP edit to a userpage'>IP userpage edit</option><option value='mw-manual-revert'>Manual revert</option><option value='massmessage-delivery'>MassMessage delivery</option><option value='meta spam id'>meta spam id</option><option value='mobile app edit'>Mobile app edit</option><option value='mobile edit'>Mobile edit</option><option value='mobile web edit'>Mobile web edit</option><option value='new blank article'>new blank article</option><option value='mw-new-redirect'>New redirect</option><option value='discussiontools-newtopic'>New topic</option><option value='Ntsamr spambot'>Ntsamr spambot</option><option value='OTRS permission added by non-OTRS member'>OTRS permission added by non-OTRS member</option><option value='OAuth CID: 429'>PAWS [1.2]</option><option value='adding email address'>possible email address</option><option value='possible vandalism'>possible vandalism</option><option value='mw-changed-redirect-target'>Redirect target changed</option><option value='rmallcat'>removed all categories</option><option value='mw-removed-redirect'>Removed redirect</option><option value='repeating characters'>repeating characters</option><option value='mw-replace'>Replaced</option><option value='discussiontools-reply'>Reply</option><option value='mw-reverted'>Reverted</option><option value='mw-rollback'>Rollback</option><option value='shouting'>shouting</option><option value='OAuth CID: 1188'>SWViewer [1.0]</option><option value='OAuth CID: 1261'>SWViewer [1.2]</option><option value='OAuth CID: 1352'>SWViewer [1.3]</option><option value='OAuth CID: 1805'>SWViewer [1.4]</option><option value='OAuth CID: 6365'>SWViewer [1.6]</option><option value='mw-undo'>Undo</option><option value='unusual redirect'>unusual redirect</option><option value='visualeditor'>Visual edit</option><option value='visualeditor-switched'>Visual edit: Switched</option><option value='wikieditor'>wikieditor (hidden tag)</option></datalist></div></div></div></div><div id='ooui-php-8' class='mw-htmlform-field-HTMLCheckField mw-htmlform-hide-if oo-ui-layout oo-ui-labelElement oo-ui-fieldLayout oo-ui-fieldLayout-align-inline' data-ooui='{"_":"mw.htmlform.FieldLayout","fieldWidget":{"tag":"mw-input-tagInvert"},"align":"inline","helpInline":true,"$overlay":true,"label":{"html":"Invert selection"},"condState":{"hide":["===","tagfilter",""]},"classes":["mw-htmlform-field-HTMLCheckField","mw-htmlform-hide-if"]}'><div class='oo-ui-fieldLayout-body'><span class='oo-ui-fieldLayout-field'><span id='mw-input-tagInvert' class='oo-ui-widget oo-ui-widget-enabled oo-ui-inputWidget oo-ui-checkboxInputWidget' data-ooui='{"_":"OO.ui.CheckboxInputWidget","name":"tagInvert","value":"1","inputId":"ooui-php-5","required":false}'><input type='checkbox' tabindex='0' name='tagInvert' value='1' id='ooui-php-5' class='oo-ui-inputWidget-input' /><span class='oo-ui-checkboxInputWidget-checkIcon oo-ui-widget oo-ui-widget-enabled oo-ui-iconElement-icon oo-ui-icon-check oo-ui-iconElement oo-ui-labelElement-invisible oo-ui-iconWidget oo-ui-image-invert'></span></span></span><span class='oo-ui-fieldLayout-header'><label for='ooui-php-5' class='oo-ui-labelElement-label'>Invert selection</label></span></div></div><input id="mw-input-action" name="action" type="hidden" value="history"> <div class="mw-htmlform-submit-buttons"> <span id='ooui-php-9' class='mw-htmlform-submit oo-ui-widget oo-ui-widget-enabled oo-ui-inputWidget oo-ui-buttonElement oo-ui-buttonElement-framed oo-ui-labelElement oo-ui-flaggedElement-primary oo-ui-flaggedElement-progressive oo-ui-buttonInputWidget' data-ooui='{"_":"OO.ui.ButtonInputWidget","type":"submit","value":"Show revisions","label":"Show revisions","flags":["primary","progressive"],"classes":["mw-htmlform-submit"]}'><button type='submit' tabindex='0' value='Show revisions' class='oo-ui-inputWidget-input oo-ui-buttonElement-button'><span class='oo-ui-iconElement-icon oo-ui-iconElement-noIcon oo-ui-image-invert'></span><span class='oo-ui-labelElement-label'>Show revisions</span><span class='oo-ui-indicatorElement-indicator oo-ui-indicatorElement-noIndicator oo-ui-image-invert'></span></button></span></div> </div></div></fieldset></form></div><div class="mw-history-legend"> <div id="histlegend" class="plainlinks"> <p><span style="white-space:nowrap;">Click on any date below to read that revision (<a href="/wiki/Help:Tracking_changes#Page_history" title="Help:Tracking changes">learn more</a>).</span><br /> <span style="white-space:nowrap;">External tools:</span> <span style="white-space:nowrap;"><a rel="nofollow" class="external text" href="http://wikipedia.ramselehof.de/wikiblame.php?project=wikibooks&article=Portada">Search</a> <b>·</b></span> <span style="white-space:nowrap;"><a class="external text" href="https://tools.wmflabs.org/xtools-articleinfo/index.php?article=MediaWiki:Histlegend&lang=en&wiki=wikibooks">Statistics</a> <b>·</b></span> <span style="white-space:nowrap;"><a class="external text" href="https://tools.wmflabs.org/xtools-articleinfo/index.php?project=en.wikibooks.org&article=Portada">Contributors</a> <b>·</b></span> <span style="white-space:nowrap;"><a class="external text" href="https://en.wikibooks.org/w/index.php?action=info#mw-pageinfo-watchers&title=Portada">Watchers</a> <b>·</b></span> <span style="white-space:nowrap;"><a class="external text" href="https://tools.wmflabs.org/pageviews?project=en.wikibooks.org&pages=Portada">Readers</a></span> </p> <hr /> <p><span style="white-space:nowrap;">(cur) = difference with current version,</span> <span style="white-space:nowrap;">(last) = difference with preceding version,</span> <span style="white-space:nowrap;"> <b>m</b> = <a href="/wiki/Help:Editing#Minor_edit" title="Help:Editing">minor edit</a>,</span> <span style="white-space:nowrap;">→ = <a href="/wiki/Help:Editing#Sections" title="Help:Editing">section edit</a>,</span> <span style="white-space:nowrap;">← = <a href="/wiki/Help:Editing#Edit_summary" title="Help:Editing">automatic edit summary</a></span> </p> </div> </div><form action="/w/index.php" id="mw-history-compare"> <input type="hidden" value="Portada" name="title"> <div class="mw-history-compareselectedversions"><input class="historysubmit mw-history-compareselectedversions-button cdx-button" title="See the differences between the two selected revisions of this page [v]" accesskey="v" type="submit" value="Compare selected revisions"> </div><section id="pagehistory" class="mw-pager-body"><h4 class="mw-index-pager-list-header-first mw-index-pager-list-header">15 January 2010</h4><ul class="mw-contributions-list"> <li data-mw-revid="1696829"><span class="mw-history-histlinks mw-changeslist-links"><span><span class="mw-history-histlinks-current">cur</span></span><span><a href="/w/index.php?title=Portada&diff=prev&oldid=1696829" class="mw-redirect mw-history-histlinks-previous" title="Difference with preceding revision">prev</a></span></span><input type="radio" value="1696829" disabled="" name="oldid" id="mw-oldid-null"><input type="radio" value="1696829" checked="" name="diff" id="mw-diff-1696829"> <bdi dir="ltr"><span class="mw-changeslist-time">06:29</span><bdi dir="ltr"><a href="/w/index.php?title=Portada&oldid=1696829" class="mw-redirect mw-changeslist-date" title="Portada">06:29, 15 January 2010</a></bdi></bdi> <span class='history-user'><a href="/wiki/User:Mike%27s_bot_account" class="mw-userlink" title="User:Mike's bot account" data-mw-revid="1696829"><bdi>Mike's bot account</bdi></a> <span class="mw-usertoollinks mw-changeslist-links"><span><a href="/wiki/User_talk:Mike%27s_bot_account" class="mw-redirect mw-usertoollinks-talk" title="User talk:Mike's bot account">discuss</a></span> <span><a href="/wiki/Special:Contributions/Mike%27s_bot_account" class="mw-usertoollinks-contribs" title="Special:Contributions/Mike's bot account">contribs</a></span></span></span> <abbr class="minoredit" title="This is a minor edit">m</abbr> <span class="mw-changeslist-separator"></span> <span class="history-size mw-diff-bytes" data-mw-bytes="23">23 bytes</span> <span dir="ltr" class="mw-plusminus-null mw-diff-bytes" title="23 bytes after change">0</span> <span class="mw-changeslist-separator"></span> <span class="comment comment--without-parentheses">Robot: Fixing double redirect to <a href="/wiki/Main_Page" title="Main Page">Main Page</a></span> <span class="mw-changeslist-links mw-pager-tools"><span><span class="mw-history-undo"><a href="/w/index.php?title=Portada&action=edit&undoafter=1694588&undo=1696829" class="mw-redirect" title=""Undo" reverts this edit and opens the edit form in preview mode. It allows adding a reason in the summary.">undo</a></span></span></span></li> </ul><h4 class="mw-index-pager-list-header">10 January 2010</h4><ul class="mw-contributions-list"> <li data-mw-revid="1694588"><span class="mw-history-histlinks mw-changeslist-links"><span><a href="/w/index.php?title=Portada&diff=1696829&oldid=1694588" class="mw-redirect mw-history-histlinks-current" title="Difference with latest revision">cur</a></span><span><span class="mw-history-histlinks-previous">prev</span></span></span><input type="radio" value="1694588" checked="" name="oldid" id="mw-oldid-1694588"><input type="radio" value="1694588" name="diff" id="mw-diff-1694588"> <bdi dir="ltr"><span class="mw-changeslist-time">14:27</span><bdi dir="ltr"><a href="/w/index.php?title=Portada&oldid=1694588" class="mw-redirect mw-changeslist-date" title="Portada">14:27, 10 January 2010</a></bdi></bdi> <span class='history-user'><a href="/wiki/User:Chris.Taub.M.D." class="mw-userlink" title="User:Chris.Taub.M.D." data-mw-revid="1694588"><bdi>Chris.Taub.M.D.</bdi></a> <span class="mw-usertoollinks mw-changeslist-links"><span><a href="/wiki/User_talk:Chris.Taub.M.D." class="mw-usertoollinks-talk" title="User talk:Chris.Taub.M.D.">discuss</a></span> <span><a href="/wiki/Special:Contributions/Chris.Taub.M.D." class="mw-usertoollinks-contribs" title="Special:Contributions/Chris.Taub.M.D.">contribs</a></span></span></span> <span class="mw-changeslist-separator"></span> <span class="history-size mw-diff-bytes" data-mw-bytes="23">23 bytes</span> <span dir="ltr" class="mw-plusminus-pos mw-diff-bytes" title="23 bytes after change">+23</span> <span class="mw-changeslist-separator"></span> <span class="comment comment--without-parentheses">Redirected page to <a href="/wiki/Main_page" class="mw-redirect" title="Main page">Main page</a></span></li> </ul></section></form><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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