2.3.3.4 Extensions XML Part
An instance of an Extensions XML part type that specifies extensibility in a web drawing. The following properties identify this part:
Content Type: |
application/vnd.ms-visio.extensions+xml |
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Root Namespace: |
http://schemas.microsoft.com/office/visio/2011/1/core |
Source Relationship: |
http://schemas.microsoft.com/visio/2010/relationships/extensions |
The Extensions XML part MUST be a target of an explicit relationship from a Document XML Part. Implicit or explicit relationships to any other parts are unused and MUST be ignored.
The root element for this part MUST be an Extensions element.