Name: GRETXT Purpose: erase text from graphics screen Category: GRAPHICS File: pgplot.src Author: T.J. Pearson Use: see description below. Description: SUBROUTINE GRETXT GRPCKG: Erase the text screen. Some graphics devices have two superimposed view surfaces, of which one is used for graphics and the other for alphanumeric text. This routine erases the text view surface without affecting the graphics view surface. It does nothing if there is no text view surface associated with the device. Arguments: none. Updates: Oct 16, 1998: JPT automatically extracted from source.