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Date: Tue, 22 Jul 2014 21:02:18 -0700
From: Dave Curtis <davecurtis AT sonic DOT net>
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To: geda-user AT delorie DOT com
Subject: [geda-user] Eagle .dru file definitions, anyone?
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Reply-To: geda-user AT delorie DOT com

Has anyone seen a description of the Eagle .dru (design rule) file?

I notice that a lot of fab houses publish Eagle .dru files for their 
process, and it might be a quick/easy project to create a .dru to PCB 
design rule translator for most of the common/meaningful rules.

It's a plain text file with a bunch of names and values, so it wouldn't 
exactly be rocket science to reverse engineer, but I thought someone 
might have run across a document on it.  I haven't been able to snag 
anything with Google.