The original question was "how do I label my code as Perl 5?" The correct answer, according to Apocalypse 1, is to start your source with "package." If you didn't want to put your code in a package, then start it with "package main".
The other question was "how do I label my code as Perl 6?" The correct answer, according to Apocalypse 1, is to start your source with "module" or "class".
Here is the relevant paragraph from the apocalypse: I hereby declare that a |package| declaration at the front of a file unambiguously indicates you are parsing Perl 5 code. If you want to write a Perl 6 module or class, it'll start with the keyword |module| or |class|. I don't know yet what the exact syntax of a module or a class declaration will be, but one thing I do know is that it'll set the current global namespace much like a |package| declaration does.
Righty-ho then. That's not actually all that bad, I'm used to starting files with 'module' in Haskell (where it's not always compulsory but is a good idea) so I'm sure I can cope with a similar thing in Perl 6.
Thanks
