I think it's 65,000 rows for each sheet. Which end is generating the "out of memory" error, Excel or VFP?

> I made a small program that send 20 000 rows in 9 excel sheet all in the same workbook. At the 8th sheet, I receive an "out of memomy" message. When we say that Excel has a 64K limit, does it mean that we can have 65 000 rows in all sheets or 65 000 rows per sheet ?
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>Thank you,
>Christian Cote