>I just want to point out the "child" form doesn't have to be modal. If the child form's DataSession is set to Default and it's launched from code in a Private Datasession form the child form opens in the same Private DS and has access to all the tables already open and any that it opens are added to the PrivateDS.

Thanks for the addendum, David. As I've mentioned, I'm experimenting with encapsulating each form so they don't have to rely on anything (except Init parameters) from the parent.