Normally, forms, reports, etc. run in separate windows, and the user can switch between them as needed, without any restriction. However, forms and reports have an option which causes them to be run modally, ie., the user cannot access an other window until the form or report has been closed.
The options in this section allow you to force modal execution of forms and reports, and also tables and queries. These were origially created for an earlier version of Rekall and are now essentially defunct (since they affect all objects in all databases that you might use on your machine), but have been left in for backward compatability.