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Date: Sun, 5 May 2013 08:41:13 +1000
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Subject: Re: [geda-user] need advice about copper "keep out" areas
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On Sun, May 5, 2013 at 3:43 AM, Nathan Stewart
<therealnathanstewart AT gmail DOT com> wrote:
> Can you have more than one hole in a polygon? I would expect so but my last
> attempt didn't work as expected.

Yes, it does work.
Sometimes the GUI tools are a bit hard to learn.  I recommend playing
and experimenting with them for a while.
Viewing and occasionally editing the save file in a text editor can
also provide insights into how the polygons work.

> It would also be nice to have an easy way to erode slivers and blunt acute
> angles on the remaining polygon after all the clearaces and holes are taken
> into account.

Eroding slivers is usually pretty easy ... just press the 'k' key over
the neighbouring primitives to increase the clearance until the
slivers disappear.