Use single document interface (SDI) system of window management during a Web Forms Runtime session.
There is no multiple document interface (MDI) root window. MDI toolbars exist in parent windows and menus will be attached to each window.
Calls to the FORMS_MDI_WINDOW constant returns NULL as the MDI window handle when usesdi=YES.
Option Name None
Default No
http://myserver/forms/frmservlet?form=MODULE1.fmx&usesdi=YES