ident 

supplies a name which functions as the prefix for an abbreviated
pointing scheme such as a private URI scheme. The prefix constitutes the text preceding
the first colon.

Attribute Information

Source 

<xs:attribute name="ident" use="required" type="xs:Name">
  <xs:annotation>
    <xs:documentation>supplies a name which functions as the prefix for an abbreviated pointing scheme such as a private URI scheme. The prefix constitutes the text preceding the first colon.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample