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UEFI Shell Specification v2.0 (2008-09-25)(2)
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UEFI Shell Specification v2.0 (2008-09-25)
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UEFI Shell Specification v2.0 (2012-05-22) Errata A
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UEFI Shell Specification v2.1 (2014-07-02)
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UEFI Shell Specification v2.2 (2016-01-26)