Its called https://en.wikipedia.org/wiki/Markdown https://en.wikipedia.org/wiki/Markdown But its only a very limited subset of it. For example I cannot do [thi

Its called https://en.wikipedia.org/wiki/Markdown https://en.wikipedia.org/wiki/Markdown But its only a very limited subset of it. For example I cannot do [thing](url) URL links like you can on reddit. Anyone implementing a comment system that wants rich text should be using it, though, if a WYSIWYG editor is too much, or if its targeting a technical crowd.