THERE ARE SEVERAL SYSTEMS OF INTERFACE PROGRAMS BEING
DEVELOPED FOR THE XEROX GRAPHICS PRINTER.  SEE REM, BGB, TVR,
OR HPM FOR USER-LEVEL INFORMATION.  SEE REG FOR INFO ABOUT
NEW SYSTEM FEATURES.  SEE THE FOLLOWING FILES FOR BUGS IN
CURRENT EDITIONS OF THE SOFTWARE:  XGPREM.BUG[XGP,REM]