anchor.diff:  {$IFDEF MSWINDOWS } {assume FAT system }
     FGzHeader.OS := AB_GZ_OS_ID_FAT;
   {$ENDIF MSWINDOWS }
  -
  -  FIncludeHeaderCrc := False;
   end;
   
   function TAbGzipItem.GetExternalFileAttributes: LongInt;
  
positive.code:     procedure LoadGzHeaderFromStream(AStream : TStream);
    public
      property CompressionMethod : Byte
        read FGZHeader.CompMethod write FGZHeader.CompMethod;
  
      property ExtraFlags : Byte {Default: 2}
        read FGZHeader.XtraFlags write FGZHeader.XtraFlags;
  
      property Flags : Byte
        read FGZHeader.Flags write FGZHeader.Flags;
  
      property FileComment : AnsiString
        read FFileComment write SetFileComment;
  
negative.code:       read FExtraField write SetExtraField;
  
      property HeaderCRC : Word
        read FCRC16;
  
      property IsEncrypted : Boolean
        read GetIsEncrypted;
  