anchor.diff:    PATH
   ;
   
  +//TODO many of these lexical rules need to be more accurate
   ATTRIB_NAME: ('a'..'z' | 'A'..'Z')('a'..'z' | 'A'..'Z' | DIGIT)+ ('.') TOKEN;
   PATH: ('/' TOKEN) ('/' TOKEN)*;
   CLASS: ('kind'|'mixin'|'action');
  
positive.code: ;
  
  // ----------------------------------------
  // ------ X-OCCI-Location attribute -------
  // ----------------------------------------
  /*
  
  
negative.code:   CLOSE_PATH = '>';
  }
  
  // ----------------------------------------
  // ---------- All OCCI Headers ------------
  // ----------------------------------------
  
  occi_header:
      category_header
    | link_header
  