Can someone please tell me what the F2 key does in Excel 2000? I have a
column of data which has been copied from Access 2000 into an Excel 2000
sheet. It is numeric data and when I use the "Countif" function on this
data, it doesn't calculate. However, if I press the "F2" function key in any
of the cells, something happens to the data so that the "countif" function
recoginises it. Can anyone explain what is happening here?

Thank you.
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LPS