FileFormat = 43. What does that mean?

>

>oExcel = CreateObject("Excel.Application")
>oWorkbook = oExcel.Workbooks.Open(lcXlsFile)
>oExcel.Visible = .T.
>? oWorkbook.FileFormat
>
>

>>I don't know, it was forwarded to me from a customer. How do I determine that?
>
>>>What format the Excel file is saved in?