gEDA-user: board cutout in PCB

[DJ Delorie]

> I think the GUI should somehow show this possibility. Currently the
> GTK hid gives you no hint that a layer named "outline" will be
> treated specially.

It's a hack.  What we really want to do is add the concept of layer
"types" (like fab, notes, copper, keepout, outline, anti-mask, etc).
That would require both core changes and major GUI changes, so we
haven't gotten started on it yet.