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- penerase --Command, no inputs. Abbreviation: pe
- This command tells the turtle to "lower its eraser", so that lines
- previously drawn will be erased when retraced by the turtle. It only
- works with the display turtle. The commands penup, pendown, penerase,
- and penreverse are mutually exclusive; whichever was most recently
- used is the one which affects the turtle. (Graphics terminals which
- cannot selectively erase lines, such as Tektronix displays, will treat
- penerase as pendown.)
-