At times you may want to treat the whole video screen as a Vermont Views window. You can do this by using a borderless, marginless window that covers the full screen. The coordinates for this window then are equivalent to the screen coordinates.
Vermont Views determines the number of rows and columns in the screen and pre-defines a full screen window, FULL_WNP, for you. This window has the attribute LSYS, which is translated to normal on monochrome displays and white on black on color displays. With the exception of functions like wn_drag() and wn_mv(), you can use window functions on the full screen window by specifying the window pointer FULL_WNP.
Saving and Restoring the Original PCDOS Screen
