2.2.2.2.16 Url-Directory

The Url-directory provides the name and metadata associated with a given URL.

 URL-DIRECTORY = OBRACKET "url" VALSEP URL-STRING ARGSEP "meta_info"
 VALSEP METADICT CBRACKET
 VECTOR-URL-DIRECTORY = OBRACKET STARTLIST URL-DIRECTORY *(LISTSEP URL-DIRECTORY) CBRACKET