Re: gEDA-user: pcb layer groups

[DJ Delorie <dj@xxxxxxxxxxx>]

> > I think in the case where you're using a separate layer in a group
> > just for a single board-sized polygon power plane (i.e. a GND plane in
> > one color, traces on that plane in a different color), it would be
> > very useful to be able to shut off the polygon and see only the
> > traces.
> 
> full ack.
> Protel99 has this feature and I used it all the time for exactly this
> situation.

Note that it's the *other* way that's harder in PCB.  If you shut off
the traces (i.e. looking for orphaned lands in the polygon), you still
have to draw the clearances for the traces in the whole group, even if
you don't draw the traces themselves.

I know there have been bug reports about cross-layer clearances in PCB
before.  Allowing partial groups will likely cause more such bugs for
a while.