2003.04.09 21:40 "Newbie Question (Offset value)", by Harring Figueiredo

2003.04.10 14:28 "Re: Newbie Question (Offset value)", by Phillip Seaver

From the TIFF 6 spec (at the end of the section titled "Image File Header"):

"The term byte offset is always used in this document to refer to a location with respect to the beginning of the TIFF file. The first byte of the file has an offset of 0."