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2.2.2.2.28 Element-ID

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Used to communicate identifiers of nodes of the web structure of a site. 

 ELEMENT-ID = INT
 TEMP-ELEMENT-ID = ELEMENT-ID ; MUST have a value > 0 and < 1000
 PERMANENT-ELEMENT-ID = ELEMENT-ID ; MUST have a value > 1000
 HOME-ELEMENT-ID = ELEMENT-ID ; MUST have a value = 1000
 VECTOR-ELEMENT-ID = OBRACKET STARTLIST 1*( ELEMENT-ID LISTSEP) CBRACKET
 

Each element in a web structure for a site MUST have a unique ELEMENT-ID. When an element is created, it can have a temporary ELEMENT-ID sent as a TEMP-ELEMENT-ID, which the server MUST convert to a unique PERMANENT-ELEMENT-ID. The home page for the site has a special value for its ELEMENT-ID of HOME-ELEMENT-ID.