in reply to Include external variables?

If you use Moose, take a look at MooseX::SimpleConfig.

If you don't but still use OOP, take a look at it anyway, just to understand the idea.

If you don't use OOP at all, I recommend you to create a big and complex hash variable and export it, instead of export all this "$font44".

Look at http://perldoc.perl.org/Exporter.html to learn about Exporter.