3.2.2 PropertyBag Stream ("Docf_\005Bagaaqy23kudbhchAaq5u2chNd")
This stream contains the non-simple property set storage format representing the PropertyBag property set (as described in section 3.2). The FMTID of the property set, FMTID_PropertyBag ({20001801-5DE6-11D1-8E38-00C04FB9386D}), as well as the fact that it is a non-simple property set, are indicated by its name, "Docf_\005Bagaaqy23kudbhchAaq5u2chNd", as specified in section 2.24.5.
The stream's contents are in the format of a compound file (see [MS-CFB] for details). For brevity, the binary contents of this stream are omitted here. The compound file stored in this alternate stream represents a storage with the following elements:
A stream named "CONTENTS"
A stream named "prop6"
A storage named "prop12"
The associated CLSID of the root storage is {994BFF53-DDF9-42AD-A56A-FFEA3617AC16}, which, as specified in section 2.22, is the associated CLSID of the property set. This value was set by the application and is not recognized by OLEPS implementations.