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From: Phil Harvey <phil@owl.phy.queensu.ca>
Date: Tue, 27 Sep 2011 13:25:51 -0400
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Subject: Re: [Tiff] Write Exif data to Tiff file
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Hi Joris,

On 27-Sep-11, at 1:00 PM, Joris Van Damme wrote:
> One particular datatype is IFD offset, and that's how
> the IFD list eventually turns into an IFD tree.

Regretfully this is not the case.  IFD offsets unfortunately
use the LONG datatype.  An IFD-offset datatype is mentioned
in the PageMaker 6.0 technical notes, but to my knowledge
this is not part of the official TIFF specification (but it
it should be!!), and it is certainly not in widespread use.

	-  Phil

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