anchor.diff:  RPAREN:     ')' ;
   LBRACK:     '[' ;
   RBRACK:     ']' ;
  -LBRACE:     '{' ;
  -RBRACE:     '}' ;
  +LBRACE:     '{' { nestedDictionaryDecl++; } ;
  +RBRACE:     '}' { nestedDictionaryDecl--; } ;
   
   // Reserved keywords
   IF:     'if' ;
  
positive.code: 
  // ----------------------------------------------------------
  mode VineCode;
  ROUTPUT:    '}}' -> popMode ;
  RSTMT:      '>>' -> popMode ;
  
  // Parentheses, square brackets, curly braces
  
negative.code:     //            return base.Emit();
      //    }
      //}
  
      // Nested dictionary declaration, like { "a": true, "b": { "c": false }}
      private static int nestedDictionaryDecl = 0;
  
      public static bool IsVerbatim(string str)
      {
  