Doxygen helps create software documentation from comments, but what can help create comments?

All The “help tools” page of doxygen project gives this answer.  Only one plugin from  the tools listed there interested me.  It called Atomineer. All its futures are listed on official project’s site. In sort: developer writes code – plugin writes comments. It is useful for boring tasks like some function’s parameters enumeration or return codes enumeration. The developers say that then some code  peace is changed, generated comments will also updated automatically. If developer writes self-documented code, then no additional efforts are needed for qualified documentation.