[Oberon] SystemV - Simple Graph

[Tomas Kral]

Hi,

Thinking about `Polys' and `Splines', these could be opened or closed.
Also filling is a bit o challenge, flood fill, or scan lines, other I
would not know of.

I am thinking of passing pairs of x,y either as an open array or
a linked list. Coords could be compressed, `x' in upper word, `y' in
lower. 

Other possibility could be passing an absolute origin, and then byte
increments, sort of turtle graphics.

I wish to make it simple for PO2013, any suggestions, experience I could
follow?

I have already PO2013 splines in a separate module.

-- 
Tomas Kral <thomas.kral at email.cz>