anchor.diff:  reserved_word('bsr') -> true;
   reserved_word('or') -> true;
   reserved_word('xor') -> true;
  +reserved_word('spec') -> true;
   reserved_word(_) -> false.
   
   get_compiler_options() ->
  
positive.code: 	 {Line, Col + 1}, State);
  scan_dot([C | Cs], _Stack, Toks, {Line, Col}, State,
  	 Errors)
      when C >= $\200, C =< $ ->
      done(Cs, Errors, [{dot, {Line, Col}} | Toks],
  	 {Line, Col + 1}, State);
  scan_dot([], Stack, Toks, {Line, Col}, State, Errors) ->
  
negative.code: 
  scan([C | Cs], Stack, Toks, {Line, Col}, State, Errors)
      when C >= $\200,
  	 C =< $\240 ->                        % Control chars -skip
      scan(Cs, Stack, Toks, {Line, Col + 1}, State, Errors);
  scan([C | Cs], _Stack, Toks, {Line, Col}, State, Errors)
      when C >= $a,
  