Board Thread:Support Requests - Designing Your Wiki/@comment-4573076-20190328235117/@comment-37490998-20190330013921

You could use javascript. Lets say you wanted to add text to every page(like adding a template that says certain text to every page), you could do something like this:

Hope this helps!

Also to use javascript you must request for fandom to enabled it by requesting it. And then you must go to: (yourWikiURL)/wiki/MediaWiki:Common.js and edit it to add the code you want, and then you must submit the code for review. If you have any questions please ask them.