We should figure out how to change the help & preview buttons to use our help & preview URLs. However I don't think we should try to customize the syntax highlighting for our customizations (e.g.
~~~~, artifact links, etc) yet. Can be a followup ticket.
I like this because it doesn't attempt to do a full WYSIWYG exact render, so we don't have to worry about some of our customizations. Yet it does do enough formatting that people will notice if they unintentionally cause formatting with a
_ or a
*. And it even helps with the sneaky gotcha of a bullet list without a preceding blank line (it doesn't work, it is rendered as italics)
(This idea came from discussion on [#6822])