Excel has plenty of flashy features, but few are as useful day after day as data validation. Drop-down lists were one of the first Excel features I learned that felt genuinely advanced, and I still ...
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Excel's data validation is far more powerful than just dropdowns — here's what it can actually enforce
Most people set up a dropdown list to make spreadsheets smarter with Excel's data validation. However, the Custom option in the Data Validation dialog accepts any formula that returns TRUE or FALSE, ...
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