This routine will erase any selected display memory plane in the
LX color graphics display window. Memory planes are selected by
the optional argument MPLANS as follows:
BIT MEMORY PLANE
0 (LSB) Blue
If MPLANS is omitted, all memory planes are erased.
CALL LXERAS ! Will erase entire display
CALL LXERAS (8) ! Will stop all pixels from blinking
NOTE: The LXRST routine should normally be used to clear the
screen the first time a program writes to the LX window.
This is because LXRST also resets the LX graphics
context, turns off the cursor, and sets the
LX window and image title for use by the hardcopy system.