I was thinking of that, but not sure. I am refactoring a codebase other than mine and I am going from one 10k line .pl file to varios libs, but I don't want to go crazy.

Basically, I had a Web lib for displaying information to the user and a Storage lib for actually doing stuff like saving/getting data from persistant storage.

I wanted to pass an errorHandler subroutine reference in to the Storage funtion, but what if one wasn't provided? I wanted to have a default one use, which was in the Web package.

Its late, and I am sure you probably have better things to do, but thats my issue. I felt 3 packages excessive, but couldn't think of a cleaner way. Ultimately I made the Storage func return 0 if it had problems.