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 HIDETURTLE 
 PICTURE “Extreme points.svg” [
     FILLCOLOR “SKYBLUE” PENCOLOR “SKYBLUE”
     PENSIZE 72 RIGHT 30
     FORWARD 100 RIGHT 120 FORWARD 100 FILL
     PENCOLOR “RED” PENSIZE 2
     REPEAT 3 [
         CIRCLE [70, 70, 9h, 1h, 3] 
         PENUP RIGHT 120 FORWARD 100 PENDOWN
     ]
 ]