anchor.diff:      :   ('0'..'3')
       ;
   
  -// 3.10.7 The Null Literal
  +// ��3.10.7 The Null Literal
   
   NullLiteral
       :   'null'
  
positive.code:                   Lexer section
  *********************************************************************************************/
  
  // 3.10.1 Integer Literals
  
  IntegerLiteral
      :   DecimalIntegerLiteral
  
negative.code:     :   block
      |   ';'
      |   IDENTIFIER ':' statement
      |   expression  ';'     
      |   'if' parExpression statement ('else' statement)?          
      |   'assert'  expression (':' expression)? ';'            
      |   'switch' parExpression '{' switchBlockStatementGroups '}'
  