The operating system of the CAP computer designed at Cambridge University in the 1970s,
and described at http://www.research.microsoft.com/NeedhamBook/cap.pdf .

http://www.cs.washington.edu/homes/levy/capabook/Chapter5.pdf is the chapter on CAP in LevyBookCapabilityBasedComputerSystems.

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Also see CapabilitySecurityModel.
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ObjectCapabilityOperatingSystem CategoryOperatingSystem