App::Trace provides debug/tracing support for perl programs and modules.

The basic concept is that you put a special call at the beginning and end
of each subroutine/method, and when tracing is enabled, you can see the
flow of your program.

This module reflects my dislike of the perl debugger. I also dislike
putting in print statements to debug, then commenting them out when I'm
done. I would rather put debug statements in my code and leave them there.
That way, when programs work their way into production, they can still be
debugged by using appropriate command line options.