15.2.1 Additional Characteristics Part
Content Type:
application/xml
Root Namespace:
Source Relationship:
Root Element
Ref.
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§ 15.2.12.3
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http://schemas.openxmlformats.org/officeDocument/2006/additionalCharacteristics
http://schemas.openxmlformats.org/officeDocument/2006/relationships/customXml
An instance of this part type contains information about additional characteristics of the producer that generated the document, when those characteristics cannot be specified using elements defined by ISO/IEC 29500. [Note: The contents of this part are purely informational, and do not place any requirements on subsequent consumption of the document. They are, however, intended to provide detailed information about the capabilities of the document’s producer, allowing those capabilities to be factored in during subsequent processing. For example, an application which supports 100,000 spreadsheet columns might choose to limit its output to 10,000 columns when presented with a document whose characteristics indicate that it was produced by an application with that limitation, in order prevent the introduction of content which is unsupported by the original producer (as that application might be used in the future to process this document). This markup is provided by ISO/IEC 29500 in order to provide an interoperable way of storing this information. end note]
A package is permitted to contain zero or one Additional Characteristics parts, and each such part shall be the target of an implicit relationship from a Main Document (11.3.10) part in a WordprocessingML package; a Workbook (12.3.23) part in a SpreadsheetML package; or a Handout Master (13.3.3) , Notes Master (13.3.4), Notes Slide (13.3.5), Presentation (13.3.6), Slide (13.3.8), Slide Layout (13.3.9), or Slide Master (13.3.10) part in a PresentationML package.
[Example: The following Main Document part-relationship item contains a relationship to an Additional Characteristics part, which is stored in the ZIP item ../customXML/item2.xml:
<Relationships xmlns="…">
<Relationship Id="rId1"
Type="http://…/customXmlData" Target="../customXML/item2.xml"/>
</Relationships>end example]
An Additional Characteristics part shall be located within the package containing the relationships part (expressed syntactically, the TargetMode attribute of the Relationship element shall be Internal).
An Additional Characteristics part is permitted to have implicit relationships to the following parts defined by ISO/IEC 29500:
- Custom XML Data Storage Properties (15.2.6)
An Additional Characteristics part shall not have implicit or explicit relationships to any other part defined by ISO/IEC 29500.