Thread:Project:Support desk/Navigation menu : how to change the apparence like a TreeView menu ?/reply

I have the same question. MediaWiki has the cool little arrows in the Sidebar Navigation and I have searched how to make this happen with my wiki and can't find how to do it. You would think that there would be some documentation on this. I found this Treeview snippet: https://www.mediawiki.org/wiki/Snippets/Treeview

But there is no explanation where to put this snippet.

I have read many of the the following pages with no results, except when trying to alter the localsettings.php it crashed my database.

https://www.mediawiki.org/w/index.php?search=treeview&title=Special%3ASearch