1994.01.17 14:25 "Re: ExtraSamples Bug in TIFF 3.30beta 002", by Yecheng Wu
Not sure if this is a bug. It seems that only if you have the td_extrasamples set up you need to output. Otherwise just don't bother to output it. If you add! to it, it will output when it's not set up and won't do it when it's needed.