[plt-scheme] graph-pasteboard

> Insertion and removal of snips in that pasteboard doesn't update the graph
> structure in general. Its done separately, so that you can have a snip be
> in the graph, but (probably temporarily) not visible.

thanks for pointing this out,.. i had just assumed that the graph and its
presentation were 1 to 1.

on a related note, are you aware of any graph layout, or graph drawing
algorithms which are written using  mrlib, or could be reasonably ported to it?

nk