Excel conditional formatting made easy! Learn formulas, advanced techniques, and troubleshooting tips to enhance your data ...

Suppose you have a spreadsheet tracking project deadlines. If you use NOW(), every time you enter data, change a format, or just scroll through your sheet, Excel will recalculate the formula.

It isn’t news that [s0lly] likes to do ray tracing using Microsoft Excel. However, he recently updated his set up to use functions in a C XLL — a DLL, really — to accelerate the Excel rendering.