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Date: Fri, 5 Jul 2013 12:27:48 -0700
Message-ID: <CAD034BHBFueWeSv27nEUjkiGqS9OeN9Lt63svAZxfc2Dxj2Y8A@mail.gmail.com>
Subject: Re: change an image or convert it to metapost
From: David Topham <dtopham@gmail.com>
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Check this out for some possibilities of converting image back to Metapost:

http://matagalatlante.org/nobre/hyt/mpost.html