$sktemplate: SkinTemplate object
$nav_urls: array of tabs
+'SkinTemplateGetLanguageLink': After building the data for a language link from
+which the actual html is constructed.
+&$languageLink: array containing data about the link. The following keys can be
+ modified: href, text, title, class, lang, hreflang. Each of them is a string.
+$languageLinkTitle: Title object belonging to the external language link
+$title: Title object of the page the link belongs to
+
To alter the structured navigation links in SkinTemplates, there are three
hooks called in different spots:
dummy parameter with "$dummy=false" in their code and return without echoing
any HTML to avoid creating duplicate toolbox items.
+'SkinVectorStyleModules': Called when defining the list of module styles to be
+loaded by the Vector skin.
+$skin: SkinVector object
+&$styles: Array of module names whose style will be loaded for the skin
+
'SoftwareInfo': Called by Special:Version for returning information about the
software.
$software: The array of software in format 'name' => 'version'. See