anchor.diff:                  | '"'  ( ~('\n'|'\r'|'\f'|'"')  )* ( '"'  | { $type = INVALID; } )
                   ;
   
  -EXPRESSION_FUNC : E X P R E S S I O N ;
  -ALPHA_FUNC      : A L P H A           ;
  +// Some special identifiers
  +EXPRESSION : E X P R E S S I O N        ;
  +ALPHA      : A L P H A                  ;
   
   // -------------
   // Identifier.  Identifier tokens pick up properties names and values
  
positive.code:     ;
              
  ruleSet
      : selector (WS* COMMA WS* selector)* WS* LBRACE (WS* declaration)* WS* RBRACE
      -> ^(RULESET ^(SELECTOR selector)+ declaration*)
      ;
  
  selector
  
negative.code: //
  styleSheet  
      : WS*
        (charSet WS!*)?
        (cssImport WS!*)*
        (bodyset WS!*)*
        EOF!
      ;
      
  // -----------------
  