mapRef 

<p>This attribute is only used on a submap glyph. It is required.</p>
<p>Reference to the ID of the map which provides the content of the submap. If no map is available providing the content of the submap an omitted process should be used instead of the submap. Submaps are only used in PD and AF, and thus this attribute as well.</p>

Attribute Information

Used By

Element glyph

Source 

<xsd:attribute name="mapRef" type="xsd:IDREF" use="optional">
  <xsd:annotation>
    <xsd:documentation>
      <p>This attribute is only used on a submap glyph. It is required.</p>
      <p>Reference to the ID of the map which provides the content of the submap. If no map is available providing the content of the submap an omitted process should be used instead of the submap. Submaps are only used in PD and AF, and thus this attribute as well.</p>
    </xsd:documentation>
  </xsd:annotation>
</xsd:attribute>

Sample