Turtle Graphics Output
- The button "Up" is to lift the pen. You cannot draw with your button "Up."
- The button "Down" is to put your pen down. You can draw only in this
position.
- The button "Left" is to turn the turtle left. However, you need to know
where the turtles' eyes are. If the turtle is going South, then its left is
"East" (your right). If the trutle is going North, then its left is West. If
the turtle is going "East", then its left is North. If the turtle is going
"West," then its left is South.
- Initially, your current position is at point (0, 0) (the upper left
point), and the pen is "Up."
- Lines are visible only inside your applet.
- The turtle is never visible (it's only in your imagination). However, what
it draws is visible, as long as it draws inside your applet, and with the pen
"Down."