Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated ...
SharePains by Pieter Veenstra on MSN

The Scalability of Office Scripting in Microsoft Excel

Today's post is all about the scalability of Office Scripting in Microsoft Excel using the Run Script action in Power ...
Learn practical HYPERLINK tips, from dynamic sheet links and navigation buttons to XLOOKUP row jumps and tidy anchor text for client reports.