I was looking for a workflow to automatically send a notification to a user that is mentioned in a comment (as in "@username"), and was very happy to see this paragraph on the "What's new in YouTrack 5.0" website:
"Be more convincing and less ambiguous with the new wiki markup for visual descriptions and comments: use HTML tags, mention users, and much more."
However, I can't seem to find anything more about this feature. Can anyone help me find some more information about it? Thanks.