Dale A. Callaham wrote: >I have documentation for the TIFF format that was current in 1987. I'm >sure that the specification has been extended by now. Can you please tell >me what documentation you refer to in the above message so I can have a >look at it? In advance, Thanks. I can't currently locate the Internet source for this. It is a large document (121 pages for the Revision 6 Final dated 1992) which is distributed in Postscript format, which makes it easy enough to print out. "For copy of the TIFF specification call (206) 628-6593" Maybe someone in the US can do this - it's expensive from here. Non-Internet sources: "On compuserve: GO ALDSVC, Message section #10" "Applelink: Aldus Developers Icon" The quotes are from the title page. There is an Internet ftp site (maybe more than one) and I'll post it when I find it (unless someone else does so first). The section relating to multiple images is changed relative to previous releases - see p36 "NewSubfileType". Tage 254. The options specifically considered here are reduced resolution version of another image, multi-page image (which would be what you would use, but which a cross-reference indicates was originally conceived for a multi-page fax) or transparency mask. These options are indicated by bit flags. Guy Cox