<pen down> = starts pen
<pen up> = stops pen
<clear> = erases any pen or stamps
<change pen color by( =changes pen size
<set pen color to( = changes pen color
<stamp> = leaves an image of the sprite on the background(removable)
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When the Pen is down, and the sprite moves, it will leave a line on the background. Actually, it's on a layer in front of the background but behind all the other sprites. You can use the Clear block to erase everything on that layer.
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