The action of the turtle can now be simulated by graphics on the display of a small computer: the screen turtle usually has the form of a triangular arrow that may or may not produce a line as it is made to move across the screen. See also LOGO.
"turtle graphics." A Dictionary of Computing. . Encyclopedia.com. (August 14, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/turtle-graphics
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