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AREA COLOR Example
 
GINIT
GCLEAR
PLOTTER IS CRT,"INTERNAL";COLOR MAP
WINDOW 0,1.31,1.31,0
FOR L=0 TO 1 STEP .2
  FOR H=0 TO 1 STEP 1/6
    FOR S=0 TO 1 STEP .2
      AREA COLOR H,S,L
      MOVE H+.11*L,S+.11*L
      RECTANGLE .09,.1,FILL,EDGE
    NEXT S
  NEXT H
NEXT L
LORG 7
MOVE 1.2,1.31
LABEL "z = Luminosity"
LORG 4
MOVE .6,1.31
LABEL "x = Hue"
LDIR PI/2
MOVE 1.31,.6
LABEL "y = Saturation"
END