<< I am unfamiliar with MDI but understand from Larry’s response it is built into any code within the forms or application. >>
It is an option on the command that opens a form under program control or from the R> prompt. Are your users firing the forms off directly from the Database Explorer? If so, I don't see an option there for them to specify they want to open the form in MDI mode, unfortunately. Perhaps you could submit this an an enhancement request. -- Larry
