- straight, curved, angled, thick, thin, small, large, taper, radiate, dotted, solid,
- several, varied, joined, separate, linked,
- show direction, provide a shape, provide an appearance, give an outline shape, create an illusion, suffer an after image, give a position, form a junction,
- invisible lines made by 'light', liquid/gravity, gas
I'm now off to do this digitally !