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undo (repeatedly) the last turtle action.

No argument.

undo (repeatedly) the last turtle action.
Number of available undo actions is determined by the size of
the undobuffer.

Example (for a Turtle instance named turtle):
>>> for i in range(4):(more...)

src/p/h/PhysicalTurtle-0.4/physicalturtle/turtle_main.py   PhysicalTurtle(Download)
        else:
            op = False
        self.undo() # forward motion
        self.undo() # rotate
        this_screen.tracer(this_tracer)
        else:
            op = False
        self.undo() # forward motion
        self.undo() # rotate
        this_screen.tracer(this_tracer)
        else:
            op = False
        self.undo() # forward motion
        this_screen.tracer(this_tracer)
        return op