I'll play with the idea of passing the variables between the libraries using return and ($v1,$v2) = @_;. Please bare with me if I ask questions that would seem ordinary to you. I want to use strict, I want to use a proper programming style. The many years of programming in BASIC (Commodore 64, GWBasic, Turbo Basic, QBasic) has taught me a few bad things, and it is hard to break old habbits.

Again, thank you for the wise words.