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Turtle Commands
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Eraseclears screen, returns turtle to center
Visible?show turtle (wedge shape) while drawing (more slowly)
colorset color for drawing: <none> means moving, i.e., no line
middle
<tap>turtle moves/draws to point, displays latest dist and deg
arrow keysdraws like "Etch a Sketch"
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expressionse.g., cCurve(6,6,0). erases. sets eval, times, dist and deg fields
Evalevaluates current method, using current times(*), dist(>) and deg(°) fields; changes to "Stop" -- handy if you've entered too large a value by accident (from turtle tap) or when experimenting with large recursive levels
* (times)iterate using times, dist and deg fields, e.g., 4, 50, 90 would draw a square
> (dist)go (once) distance (=dist field)
° (deg)turn angle (=deg field); note: poly ignores 0 and computes deg
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