I love this post because it is really detailed. Nice. But using paper to trace code doesn't make sense when you already have the debugger. I mean, technically that is what is is for...

  DB<1> 
main::(monks1086151.pl:18):    my $test = 1.23;
  DB<1> 
main::(monks1086151.pl:19):    print "test: $test \n";
  DB<1> 
test: 1.23 
main::(monks1086151.pl:21):    print My::Test::Print::printer() ."\n";
  DB<1> 
This is 1.11
1
main::(monks1086151.pl:23):    1;
  DB<1> no strict 'refs';
...
  DB<8> for (keys %{'My::Test::Print::'}){print qq|$_\t|};
printer    VERSION
[download]

Look ma, no paper!