>(btw, if dialog should actually be dialogue, epilog an epilogue, etc... then we better start writing all the words ending with a -gue with a -g or vice versa... so, either vog, seg, leag, dialog, monolog, or vogue, segue, league, dialogue, epilogue, dogue, blogue, smogue, clogue)

FWIW, I use "dialog" for the modal form in an application, and "dialogue" for what's in the movie script.

Tamar