anchor.diff:        FCurBlockPos := 0;
         if FCurBlock = FLast then
         begin
  -<<<<<<< HEAD
           if Count > MPool.FBlockSize then//һ飬ҳ˿С
  -=======
  -        if Count > MPool.FBlockSize then //ѾһĴС
  ->>>>>>> parent of 9bf7227... Modify DxMemoryStream
             SetSize(FPosition + Count)
           else if FPosition + Count > FSize then
             FSize := FPosition + Count;
  
positive.code:     FCurBlockPos := 0;
      if FCurBlock = FLast then
      begin
  <<<<<<< HEAD
        if Len > MPool.FBlockSize then//һˣҳ˿С
          SetSize(FPosition + Len)
        else if FPosition + Len > FSize then
  =======
        if FPosition + Len > FSize then
  >>>>>>> parent of 9bf7227... Modify DxMemoryStream
          FSize := FPosition + Len;
      end;
    end;
  
negative.code:     FCurBlockPos := 0;
      if FCurBlock = FLast then
      begin
        if Count > MPool.FBlockSize then//һ飬ҳ˿С
          SetSize(FPosition + Count)
        else if FPosition + Count > FSize then
          FSize := FPosition + Count;
  