How-To Geek on MSN

6 silent Excel spreadsheet killers (and how you can stop them)

Audit hidden data, filters, and hard-coded values to ensure your Excel spreadsheets are professional and precise.
How-To Geek on MSN

Excel LAMBDA vs. SCAN: What's the difference and how do they work together?

LAMBDA defines the custom logic, and SCAN moves that logic through your data range.