My interpritation of the spec is that technically, you can't develop anything that uses it or your work is infringing on their copyright. But, technically, I guess if we keep it REALLY low key, they might either miss us or ignore us. It might be a similar thing like the mp3 spec - Fraunhaufer (sp?) said that you could read the spec, but couldn't implement it without paying a fee... hence decoders are free, but encoders pay royalties (yet many encoders actually end up being free). So I'm sure that if we ignore this completely, and make all the stuff available for free on the internet, maybe we could scoot by the law without getting noticed.