id 

<p>The xsd:ID type is an alphanumeric identifier, starting with a letter. It is recommended to generate meaningless IDs (e.g. "map1234") and avoid IDs with a meaning (e.g. "MAPK cascade")</p>

Attribute Information

Used By

Element map

Source 

<xsd:attribute name="id" type="xsd:ID" use="required">
  <xsd:annotation>
    <xsd:documentation>
      <p>The xsd:ID type is an alphanumeric identifier, starting with a letter. It is recommended to generate meaningless IDs (e.g. "map1234") and avoid IDs with a meaning (e.g. "MAPK cascade")</p>
    </xsd:documentation>
  </xsd:annotation>
</xsd:attribute>

Sample