VisualEditor

VisualEditor is an extension that enables you to edit pages visually, in a WYSIWYG (what you see is what you get) manner. It will make it easier for those who are not familiar with MediaWiki, as they no longer need to edit source directly, while advanced editors can still choose to use the traditional source editor at the same time.

Please see Extension:VisualEditor for more information.

VisualEditor on Miraheze wikis
VisualEditor is pre-installed on all Miraheze wikis, including meta. However, it is disabled by default on your wiki, and you need to make a request on Phabricator in order to enable it, following the guide of this page.

Note that VisualEditor is among some of the extensions you cannot enable at  by yourself.