i am finishing up an opengl implementation for the lang in which it will be very easy to make pen or any other kind of drawing classes, 2d or 3d.the graphics server, which is a different project, does have a long way to go.
i work on plans for that in my spare moments, but it'll be a while. _c
The current Pen definition hints that it would be suitable for simple data visualizations, especially since the graphics server seems (does it?) to have a long way to go.