Defines a global unique identifier (GUID).
OneNote only accepts GUIDs in registry format, which includes curly braces ({}).
| Namespace | http://schemas.microsoft.com/office/onenote/2004/import | 
| Schema name | SimpleImport | 
			
<xsd:simpleType name="GUID">
  <xsd:annotation>
    <xsd:documentation xml:lang="en">
       The representation of a GUID, generally the id of an element.
    </xsd:documentation>
  </xsd:annotation>
  <xsd:restriction base="xsd:string">
    <xsd:pattern value="\{[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}\}"/>
  </xsd:restriction>
</xsd:simpleType>