ILWIS data windows are all ILWIS windows outside the Main window, e.g. map windows, table windows, pixel info windows, domain editors, representation editors, script editors, etc.
Close All: Close all ILWIS data windows.
Minimize All: Reduce all open ILWIS data windows to icons on the Windows taskbar.
Restore All: Restore all ILWIS data windows to their former size after you have minimized them.