2.1.9 Signatures Stream
An optional stream whose name MUST be "_signatures". It SHOULD<4> be omitted and MAY be ignored.
The contents of this stream are specified in [MS-OFFCRYPTO] section 2.5.1.
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An optional stream whose name MUST be "_signatures". It SHOULD<4> be omitted and MAY be ignored.
The contents of this stream are specified in [MS-OFFCRYPTO] section 2.5.1.