in reply to Reading Perl documentation in Emacs
I've never used Pod::Perldoc::ToTk and don't see myself rushing to use it now.
From the error you reported, Undefined subroutine &Pod::Perldoc::ToTk::MainLoop called, I guessed at the problem and suspect that I'm probably right about that.
Looking at the source, line 1 has "package Pod::Perldoc::ToTk;" and line 113 has "MainLoop();" — I'm reasonably certain that should be "Tk::MainLoop();".
I don't have the time at the moment to follow that up, run tests, write a patch, write additional t/whatever.t tests, and so on; however, if you or someone else wanted to look into this, I'd say that's the place to start.