The screen.erase utility erases a formatted screen.
call "dm,bp, screen.erase"
The variables below in the common variables defined in the include dm,bp,includes screen.inc must be set:
|screen.x||Coordinates of upper-left corner.|
|screen.y||Coordinates of upper-left corner.|
|screen.maxsize||Last line used on the screen. This variable was set automatically by a call to screen.display or screen.input.|