Thread:Withersoul 235/@comment-30300307-20171103002049/@comment-24530269-20171103103604

Only admins can. At the bottom of the screen, you'll find a bar with these stuff on it:

My Tools | Customize | Admin | Shortcuts

If it's not there, you'll have to click on a button (of two arrows pointing upwards) at the bottom right corner.

Once the bar is there, hover your mouse over "My Tools", then hit Theme Designer, then you'll be able to modify the wiki markup.

I would like to know your planned edits beforehand, though.