Hello,

To reduce the size, since it runs very slow, my subbordinate save it in
Excel Binay workbook, without my knowledge. Some of the formula does not not
work, so I asked her to change the xls extention in the formula into xlsb,
and it works.

My question is what other aspects that may impact our worksheets. Anyoen can
explain to me what is the difference in function this 2 formats .xls and xlsb

Thanks in advance
--
H. Frank Situmorang