| diagram | 
				  | 
			
			
				| namespace | 
				http://www.ATIS-Draft-03-00-79 | 
			
			
				| children | 
				action id start end frequency | 
			
			
				| used by | 
				 | 
			
			
				| source | 
				<xs:complexType name="SubscribeForm"> 
  <xs:sequence> 
    <xs:element name="action" type="SubscribeType"/> 
    <xs:element name="id" type="im:ReferenceID" minOccurs="0"/> 
    <!-- used to provide a unique string for the subscription --> 
    <xs:element name="start" type="DateTimePair" minOccurs="0"/> 
    <!-- presume now if not present --> 
    <xs:element name="end" type="DateTimePair"/> 
    <xs:element name="frequency" type="TimeInterval" minOccurs="0"/> 
    <!-- requested time between updates --> 
  </xs:sequence> 
</xs:complexType> |