interp.set("Forward", RobotStep.MoveForward);
interp.set("Back", RobotStep.MoveBackward);
interp.set("Left", RobotStep.RotateLeft);
interp.set("Right", RobotStep.RotateRight);
//We create and set a dummy maze variable so the user can analyze its methods.
interp.set(ROBOT_MODEL_VAR_NAME, new RobotModel(new RobotModelMaster(new MazeModel(),
MazeCell.valueOf(1, 16),
Direction.North)));
return interp;
}