iWork files. There's been at least two completely different (and completely undocumented) formats so far, with not even a proprietary library for accessing the

iWork files. There's been at least two completely different (and completely undocumented) formats so far, with not even a proprietary library for accessing them. I really wish I could provide integration with Numbers.app, but as a one-man shop I can't afford to get distracted with maintaining a reverse-engineered file format for one use case.