I wrote a PSD v5 parser for BeOS back in 1999 or 2000 (it acted as a plug-in for the OS's image format subsystem, and was also usable by 3rd party apps to write

I wrote a PSD v5 parser for BeOS back in 1999 or 2000 (it acted as a plug-in for the OS's image format subsystem, and was also usable by 3rd party apps to write PSD files). I was one of the suckers who faxed a formal request to Adobe to get the file spec. I was young, and foolish, and spent the better part of a month or so in a hex editor trying to understand why a single file format could have like 3 different string encodings.