CALL SWRECT( SWNUM, [ FCOLOR ]) This routine will draw a blank filled rectangle on the touch panel TV in the rectangle defined by switch number SWNUM. FCOLOR is the foreground color code (default = white). If the foreground color is white, the background color will be black. If the foreground color is black, the background color will be white. if switch number SWNUM is not defined, no I/O will be done.