You ought to be able to create a new quick part of your own.
Here are examples from Built-In Building Blocks.dotx.. have a look in its /word/glossary/document.xml
core-property title:
<w:dataBinding w:prefixMappings="xmlns:ns0='http://schemas.openxmlformats.org/package/2006/metadata/core-properties' xmlns:ns1='http://purl.org/dc/elements/1.1/'" w:xpath="/ns0:coreProperties[1]/ns1:title[1]" w:storeItemID="{6C3C8BC8-F283-45AE-878A-BAB7291924A1}"/>
extended-property company:
<w:dataBinding w:prefixMappings="xmlns:ns0='http://schemas.openxmlformats.org/officeDocument/2006/extended-properties'" w:xpath="/ns0:Properties[1]/ns0:Company[1]" w:storeItemID="{6668398D-A668-4E3E-A5EB-62B293D839F1}"/>
The same ought to work for a custom property eg
<property fmtid="{D5CDD505-2E9C-101B-9397-08002B2CF9AE}" pid="2" name="foo">
<vt:lpwstr>value is bar</vt:lpwstr>
</property>
I don't think you can add a new core property, since in opc-coreProperties.xsd, it is defined as:
Using xml Syntax Highlighting
<xs:element name="coreProperties" >
<xs:complexType >
<xs:all>
<xs:element name="category" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element name="contentStatus" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element name="contentType" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element ref="dcterms:created" minOccurs="0" maxOccurs="1" />
<xs:element ref="dc:creator" minOccurs="0" maxOccurs="1" />
<xs:element ref="dc:description" minOccurs="0" maxOccurs="1" />
<xs:element ref="dc:identifier" minOccurs="0" maxOccurs="1" />
<xs:element name="keywords" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element ref="dc:language" minOccurs="0" maxOccurs="1" />
<xs:element name="lastModifiedBy" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element name="lastPrinted" minOccurs="0" maxOccurs="1" type="xs:dateTime" />
<xs:element ref="dcterms:modified" minOccurs="0" maxOccurs="1" />
<xs:element name="revision" minOccurs="0" maxOccurs="1" type="xs:string" />
<xs:element ref="dc:subject" minOccurs="0" maxOccurs="1" />
<xs:element ref="dc:title" minOccurs="0" maxOccurs="1" />
<xs:element name="version" minOccurs="0" maxOccurs="1" type="xs:string" />
</xs:all>
</xs:complexType>
</xs:element>
Parsed in 0.004 seconds, using
GeSHi 1.0.8.4
Those sharepoint properties could be written to the custom properties part, or to some additional custom xml part.
http://msdn.microsoft.com/en-us/magazine/cc500578.aspx explains how custom properties managed via infopath are saved in an additional custom xml part.
It all works the same way in a w:databinding sense.
See
http://office.microsoft.com/en-au/word- ... 47524.aspx .. Document library properties and the Document Information Panel.
And
http://social.msdn.microsoft.com/Forums ... s-how-does