in reply to Tool used by Perl developers to design the flow of Perl Projects

You could try a top-down approach: code the overall logic first, with the details simplified into function calls, and then go back later and write the functions (which can themselves contain function calls, to functions that you can write later...).

Yeah, I know, that's not all visual and graphical and multimedia and cool and stuff. Nonetheless, it works reasonably well for most purposes.

We're working on a multi-year set of freely redistributable Vacation Bible School materials.