Fwd: New? PNG Chunk Type

---------- Forwarded message ----------
From: Bill <bill-IRT3DlQCis/vnERs63wLqVaTQe2KTcn/@public.gmane.org>
Date: Tue, Mar 21, 2017 at 6:05 PM
Subject: New? PNG Chunk Type
To: [email protected]


I was not successful clicking on the PNG-EXTENSIONS link.  It was
supposed to provide "PNG 1.2 Specification, Version 1.2.0".

What I need is the ability to store the location of the camera so that
I know which of several background images was used.  I already know
the day the image was taken, but, I need to know which background was
used that day for that camera for that picture.  In my case the
background on any particular day is the same for the location.  As an
alternative I could store the name of the background image - I would
simply include the location name in the background image name.

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