2.2.2.2.3 URL-String

A URL-STRING is a URL in the format of a URI-reference, as specified in [RFC3986].

 URL-STRING = URI-reference
 VECTOR-URL-STRING = OBRACKET STARTLIST 1*(URL-STRING LISTSEP) CBRACKET
  

The URL-STRING can be further qualified as server-relative or service-relative for specific uses.