This guide describes how to grey out unused cells in Excel in Windows 11/10, apply a solid fill color, use Conditional Formatting, or hide unused rows/columns.
Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.
It's never a good idea to spill your most intimate secrets to an AI chatbot, but there are ways to limit the type of data ...
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