Visual Editor
From WikiTeq Demonstration Wiki
What's VisualEditor?
VisualEditor is allows people to edit pages in MediaWiki without needing to learn wikitext syntax. With VisualEditor, formatting pages will work very similarly to a word processor, such as Microsoft Word or Google Docs. While editing, the page will look very similar to what the page will look like after it is saved.
Opening the visual editor

To edit a page using the visual editor, press on the edit icon at the top of the page.
It may take a few seconds for the page to open for editing, and longer if the page is very long.
Pressing on the three dots menu, then selecting "Edit source" will open the source editor editor.
For more information consult the Visual Editor User Guide.