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Of course it would cost money. But thing is, IBM as already spent quite an amount of money on open source, maybe they'll find this also worth spending. I never really used OS/2, still I signed the petition because I find it [i.e. opening parts or the whole OS/2] would be quite good. IMHO the problem doing it lies not in having too much MS code in it, but that it [OS/2] is still being used in quite a lot of places around the globe [think ATM].