Manual:Hooks/SkinSubPageSubtitle

Details
Called before building the list of subpage links above a subpage (like this page).

Arguments

 * &$subpages: Put the subpage links HTML in this variable
 * $skin: Skin object (since 1.17.0)

Return value
Return false if you want the content of $subpages to be displayed (this will override Skin::subPageSubtitle's functionality), return true if you want the default set of links to be generated (unless, of course, another hook overrides).