TurtleGraphics-package
                        Turtle Graphics in R
turtle_do               Evaluate a Larger Portion of Turtle Drawing
                        Code
turtle_getpos           Get the Turtle's Current Position and Direction
turtle_goto             Set the Turtle's Position and Direction
turtle_init             Set Up a New, Shiny Terrarium
turtle_move             Move the Turtle Forward or Backward
turtle_param            Set Display Options
turtle_reset            Reset the Turtle's Position and Direction
turtle_show             Show or Hide the Turtle
turtle_status           Read the Turtle's Status
turtle_turn             Turn (Rotate) the Turtle
turtle_up               Turn on or off Turtle Trace Drawing
