Allows programmers to control a turtle in a two-dimensional space in order to generate graphics.

Turtle Interpretation (working as LOGO programming, an ancient [1967] kid friendly way of teaching computer science with a Turtle), draws by means of commanding a turtle in a Cartesian plane.
Imagine a turtle sitting on your computer screen to which you could issue a set of commands: pen on, move forward, turn left, turn right, pen off, move forward, etc.