2.1.11 Signatures Stream
The signatures stream is an optional stream whose name MUST be "_signatures". This stream contains digital signatures as specified in [MS-OFFCRYPTO] section 2.5.1. This stream MAY<3> be ignored.
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The signatures stream is an optional stream whose name MUST be "_signatures". This stream contains digital signatures as specified in [MS-OFFCRYPTO] section 2.5.1. This stream MAY<3> be ignored.