Help: change interface message
Appearance
Fragment of a discussion from User talk:Siebrand
For the record the same permission error appears from Special:Translate e.g. at [1]
You do not have permission to edit this JavaScript page because it may affect all visitors. Permissions for editing of sitewide CSS/JS/JSON files were recently separated from the "editinterface" right. If you do not understand why you are getting this error, see mw:MediaWiki_1.32/interface-admin.