(last updated 2009-11-12) Name : MURATA Makoto Email : eb2m-mrt&asahi-net.or.jp MIME media type name : Application MIME subtype name : Vendor Tree - vnd.openxmlformats-officedocument.custom-properties+xml Required parameters : None Optional parameters : charset, as specified in 3.2 of RFC 3023. Encoding considerations : binary This media type may require encoding on transports not capable of handling binary. Security considerations : The security considerations for application/xml (section 3.2 of RFC 3023) all apply to this subtype. This subtype is intended for an OPC part of an OOXML document rather than an entire OOXML document. In the simplest case, an OOXML document is a zip file while an OPC part is a file in the zip file. The OPC part announced by this subtype does not contain active or executable contents, although an OPC package representing an OOXML document may contain them as other OPC parts. The OPC part announced by this subtype may contain personal information if the user types such personal information as part of an OOXML document. Privacy protections of such personal information may be provided at the OPC package layer or a layer above it. They are not provided at the layer of the OPC part announced by this subtype. Although OOXML documents can have digital signatures, such digital signatures are not at the layer of the OPC part announced by this subtype but rather at the OPC package layer. Interoperability considerations : No specific issues have been identified. Published specification : ISO/IEC 29500-1:2008, Clause 15.2.12.2 Applications which use this media : OOXML applications. Additional information : 1. Magic number(s) : None 2. File extension(s) : xml 3. Macintosh file type code : "TEXT" 4. Object Identifiers: None Person to contact for further information : 1. Name : MURATA Makoto 2. Email : eb2m-mrt&asahi-net.or.jp Intended usage : Common Author/Change controller : ISO/IEC JTC1/SC34/WG4 (file created 2009-11-12)