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2006.10.16 20:34 "[Tiff] Tag 346", by Ross Presser
2006.10.16 21:24 "Re: [Tiff] Tag 346", by Joris Van Damme
2006.10.16 21:47 "Re: [Tiff] Tag 346", by Ross Presser
2006.10.16 21:57 "Re: [Tiff] Tag 346", by Bob Friesenhahn
2006.10.16 22:50 "Re: [Tiff] Tag 346", by Chris Cox
2006.10.16 22:18 "Re: [Tiff] Tag 346", by Toby Thain
2006.10.17 01:38 "Re: [Tiff] Tag 346", by Joris Van Damme
2006.10.17 11:41 "Re: [Tiff] Tag 346", by Leonard Rosenthol
2006.10.17 12:24 "Re: [Tiff] Tag 346", by Toby Thain
2006.10.17 13:15 "Re: [Tiff] Tag 346", by Leonard Rosenthol
2006.10.17 13:19 "Re: [Tiff] Tag 346", by Leonard Rosenthol
2006.10.17 13:27 "Re: [Tiff] Tag 346", by Ross Presser
2006.10.17 13:53 "Re: [Tiff] Tag 346", by Leonard Rosenthol
2006.10.17 13:17 "Re: [Tiff] Tag 346", by Ross Presser
2006.10.18 10:20 "Re: [Tiff] Tag 346", by Gerben Vos
2006.10.17 19:36 "Re: [Tiff] Tag 346", by Chris Cox

2006.10.16 20:34 "[Tiff] Tag 346", by Ross Presser

Some extensive googling has turned up that Tag 346 was proposed in 1995 to make it possible to create paletted images using colorspaces other than RGB (much in the way that PDF supports it). Cf the following:

http://partners.adobe.com/public/developer/en/tiff/TIFFPM6.pdf http://www.awaresystems.be/imaging/tiff/tifftags/indexed.html

http://www.asmail.be/msg0055062731.html http://tools.ietf.org/html/draft-ietf-fax-tiff-fx-13

Is there any extant software anywhere that implements this, either for writing or reading? (I have some hints that Pagemaker supported it at some point.)

Also, are there any sample images anywhere?