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