PROJECT TITLE:
Turtle Graphics

PURPOSE OF PROJECT:
This is the traditional turtle graphics system.
The world is a two-dimensional grid with 1-pixel resolution, and turtles
are programmed to draw various shapes. 
A teacher could provide the generic Turtle class, while students create 
specialised subclasses.

VERSION or DATE:
1.0

HOW TO START THIS PROJECT:
Compile all the classes and press the run button.

AUTHORS:
Poul Henriksen

USER INSTRUCTIONS:
Add turtles to the world by right clicking a turtle class and selecting 
a constructor.
