Hi,
check if there is not a formula in the tab, right click on the mouse in the
tab name, view code

hope this helps

"Pamela" wrote:

I have received an old spreadsheet built awhile ago. There is a hidden
formula and I can't figure out how it gets there.

Example. if I punch a number in F8 the H8 appears with =D8-F8. it is not
protected or hidden and no conditional formatting that I can see.

its driving me crazy! :)