Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated ...

Encryption can protect your data from crooks, but if you don't have a recovery key stored securely, it can also keep you out ...

The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...