Thread:Support/MediaWiki:Visualeditor-formatdropdown-format-preformatted/en/reply

"Pre-formatted" is the formal term for this kind of formatting - see this page from W3C from 1997; roughly, it means "mono-spaced font, white space is listened to". The text retains all its other styling, though, and if you change it to a format that is more regular (like paragraph or eventually blockquote) you should still get all the styling retained as before.

Happy to use a different term, but this is the term used across the Web for decades and is the term use in MediaWiki too…