anchor.diff:  
   RBRACE
       : '}}'
  -    ;
  -
  -BAR
  -    : '|'
       ;
   
   TEXT
  
positive.code:     ;
  
  href
      : LBRACKET text (BAR markup+)? RBRACKET
      | LBRACE text BAR markup+ RBRACE // Creole 0.2
      ;
  
  image
  
negative.code: 
  tablerow
      : ('|' markup)+ '|' WS*
      ;
  
  title
  