People still think mediawiki needs markup language, but you can also edit using wysiwyg. For hysterical raisins, english wikipedia has this feature turned off (but as an opt-in feature) , but eg the german wikipedia has this feature as an either-or option.

Here's the german wikipedia featured article in edit mode

https://de.wikipedia.org/wiki/Hermannstra%C3%9Fe_(Berlin-Neu...

Just click in the text and start editing! :-) (just remember to NOT commit your test changes . -unless you happen to write coherent German :-) )

Hang on a minute! Of course I can direct-link to english wikipedia editing too; here you go:

If you prefer english, here's a direct-link to editing todays front-page article on en.wikipedia. Once again, don't actually commit unless you're doing something useful. :-)

https://en.wikipedia.org/w/index.php?title=North_Cascades_Na...

The above is fairly safe, but if you feel a bit nervous; here's a sandbox page that is completely safe to edit:

https://en.wikipedia.org/w/index.php?title=Draft:Sandbox&vea...