>The former. Modal forms and reports act this way. If a modal form or report is set to the default data session it will use the current data session of the calling form. When you take advantage of this behavior you don't want any de stuff in teh modal form, let the caller handle the data.

Interesting. This sounds similar to the way I used to do things, with everything using default DSs (since everything ran from a single form, and the form depth was not deep).

I'm avoiding that now, both to experiment, and to reap the rewards of having each form entirely encapsulated. If nothing else, I've found it makes testing each form easier.