Turtle graphics is a style of computer drawing based on preserved state (position and orientation) and a small number of operations against that state (forward, turn, pen up & down). SeymourPapert promoted (invented?) turtle graphics and the associated turtle geometry as a simplification that made computers and algorithmic thought accessible to kids. The state was called the *turtle* and programs taught the turtle how to draw.
See LogoLanguage.

A Lindenmayer System is a 3-dimensional turtle graphics system tuned to draw fractals. FractalLifeEngine is an example of one: . http://flea.sourceforge.net

to draw-a-box forward 10 turn 90 forward 10 turn 90 forward 10 turn 90 forward 10 turn 90 to draw-a-window draw-a-box turn 90 draw-a-box turn 90 draw-a-box turn 90 draw-a-box turn 90

A Lindenmayer System is a 3-dimensional turtle graphics system tuned to draw fractals. FractalLifeEngine is an example of one: . http://flea.sourceforge.net

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