WinStudio
Derived forms are copies of master forms, and are meant to be accessed on alternate devices (for example, mobile phones and tablet PCs). Because of the differences in devices, components on a derived form must often be rearranged or removed.
NOTE: This dialog box can be accessed in Runtime Mode. However, in this case, only existing derived forms can be selected. To create a new derived form, you must be in Design Mode.
About Devices and Derived Forms
Managing Master and Derived Forms
Specifying a Device as the Master Form