Board Thread:Support Requests - Getting Technical/@comment-1609742-20150830200627/@comment-1757994-20150831033055

As you may discover, there's no such thing as mw-autocollapse. You can create it, if you really want, by adding something like the following to MediaWiki:Common.js....  $(function {  if ($('.mw-collapsible').length > 1) {    // if there's more than one collapsible element    //   simulate a click to collapse uncollapsed autocollapse elements    $('.mw-collapsible.mw-autocollapse:not(.mw-collapsed)').each(function (i, el) { $(el).find('.mw-collapsible-toggle > a').click; }); } }); Disclaimer: I haven't tested it.

Otherwise, if you just want something to be collapsible, but not collapsed, just specify only mw-collapsible.