Microsoft Excel's Auto Fill features help you quickly enter the same value in more than one cell or fill a series of cells with related or sequential values. You can type "Acme Corporation" in one ...

DATEDIF(), which means Date + Dif, is a compatibility function left over from Lotus 1-2-3 that Microsoft adopted in Excel version 2000, which is the only version that explains how this function works.

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...