AI overview
I don't have the actual context of the "Help:Wikitext" Wikipedia page to base an accurate overview on. Without access to that specific help page, I cannot provide an overview based solely on its content as you've requested. If you could provide the text from that help page, I'd be happy to write a 2-sentence plain-language overview for a general reader.
AI-generated from the Wikipedia summary — may contain errors.
Article
Wikitext, also known as wiki markup or wikicode, is the markup language used by the MediaWiki software to format pages.
To learn how to view and edit wikitext, and how to save changes, see Help:Editing. In most cases, markup can be copied and pasted without the need to write new code. A quick reference guide is available at Help:Cheatsheet.