Making a pie chart is actually not too hard!
You'll have to draw a circle, and then divide it into segments using lines. The lines can be drawn logically using a bit of trigonometry and a relative sum. You'll have to setup some things first...
TOTAL=RED+BLUE+GREEN+YELLOW 'SUM OF ALL COLORS
SUM=0 'PERCENTAGE SUM
GCIRCLE 200,120,50 'DRAW CIRCLE
GLINE 200,120,200,70 'DRAW 1ST LINE
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