Greetings Fellow Monk:
This post regarding Tk_GetDash got me curious so I decided to do a little digging. First I went to CPAN and didn't find any direct reference so I decided to Google it and see what fell out. Some of the the references there too wre fairly thin. Here is one of URLs that have a little more to them:

A Tk_GetDash 'ManPage ' on linbox.com

All of the one's that were titled as a manpage pretty much had the same content.
Hope this helps.