anchor.diff:    encoding_record: Cardinal;
     i,numTables: Cardinal;
   begin
  -  TtfBuffer := nil;
  +  Data := Nil;
     BufferSize := 0;
     _Ready := False;
   
  
positive.code:       indexToLocFormat: Integer;         // format needed to map from glyph index to glyph
  
        BufferSize: Int64;
        TtfBuffer: PByteArray;
  
        Function ttBYTE(Const offset: Cardinal): Byte;
        Function ttUSHORT(Const offset: Cardinal): Word;
  
negative.code:     Exit;
    End;
  
     t := stbtt__find_table('maxp');
  
     if t<>0 then
        numGlyphs := ttUSHORT(t+4)
  