2004.10.01 07:22 "[Tiff] BigTIFF extension issue", by Joris Van Damme

2004.10.04 14:02 "Re: [Tiff] Re: BigTIFF extension issue", by Bob Friesenhahn

I'm curious - can you name some examples please. I'd be interested in hearing about some and seeing exactly what the differences are/were between 'changes'.

The BMP format is an example of a format which has been extended without breaking a lot of existing software. Recently BMP v3 was introduced. This was possible because the additions were made in a portion of the file header which can be skipped based on an offset value which appears early in the header. Properly written old readers should automatically skip the new stuff (in practice some readers were broken).


Bob Friesenhahn