Scott,
With reference to your comments, I do not use DVD Architect but ArcSoft Total Media Extreme 2 to create menus and then burn DVDs. This software does not seem to use grids to limit text. But where the guidelines will also be applicable are in the use of Subtitles which I use. Here there is a Text Placement feature showing only the inner limit, to which I shall now adhere dutifully.
Thanks for your interest in this matter.
Regards
Michael