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2.1.7.5 Embedding Storage (MBD...)

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An instance of the Embedding Storage specifies an embedded OLE object or an ActiveX control that uses storage-based persistence.

The name of this storage MUST be "MBD" followed by eight hexadecimal digits uniquely identifying the embedded object. An object persisted in an Embedding Storage MUST have a corresponding Obj (section 2.4.181) in a worksheet substream (section 2.1.7.20.5), macro sheet substream (section 2.1.7.20.4), or dialog sheet substream (section 2.1.7.20.2) with a cmo.ot field that equals 8, a pictFlags.fPrstm field that equals 0, and a pictFlags.fDde field that equals 0. The pictFmla.lPosInCtlStm field of the Obj record specifies the name of the Embedding Storage that is associated with that Obj record.