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Date: Thu, 26 Jul 2012 03:22:48 -0400
From: Phil Taylor <phil AT plastitar DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] how to use "clearance" and mask in pcb footprint
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Reply-To: geda-user AT delorie DOT com

OOPS:

On 7/26/2012 1:27 AM, Phil Taylor wrote:
> Ram,
>
> This document explains the clearance and mask numbers ... which are not
> as obvious as you might at first think.

http://www.brorson.com/gEDA/land_patterns_20070818.pdf