CLEAR

ALPHANUMERIC

 The CLEAR\ALPHANUMERIC command clears the alphanumeric (transparent)
 portion of the monitor screen only, and has no affect on the graphics
 or the REPLOT option.

CIT467

 On a CIT467 monitor, the CLEAR\CIT467 command will toggle the graphics
 screen on or off. The first time this command is entered, the
 graphics screen is turned off, and any graphics will disappear. The
 next time CLEAR\CIT467 is entered, the graphics screen will be turned back
 on, and your graphics will reappear. This has no affect on the generation
 of hardcopies.

REPLOTONLY

 The CLEAR\REPLOTONLY command only clears the replot option and does not
 affect the graphics.  There is nothing to REPLOT after CLEAR\REPLOTONLY
 until more data or text is drawn.

NOREPLOT

 The CLEAR\NOREPLOT command only clears the graphics, it does not affect
 the REPLOT option.