Right now, * is stripped off, which makes it impossible to define a help tag. You should fix that and also choose some markdown syntax to be converted to | which links to help tags.

I propose that strong (** or __) text should turn into a help tag and emphasized (_ or *) should turn into a link.

Even though I don't know any Go, this seems easy enough that I can send a pull request. Let me know if you want me to.