Allow users to choose syntax of their comments

In connection with using xwiki syntax in commenting on documents, it's not clear which syntax is the right one to use. When I want to post a comment with e.g. an Link to specific header in it, I don't know which syntax is used on that document. In case the user has only view rights, he can't even find out what's right by switching to edit-mode to see wheather 2.0 or 2.1 is used.

My suggestions is to allow users to choose the syntax of their comments or just allow plain text in commenting.