I've looked and looked in the archives but I'm not able to find
something this simple and I can't get anything that I've tried to
work.

When a cell in B1 is not empty, i.e., filled, I need the cell in A1 to
change. I know what to do with the formatting, I just can't get
anything to work with the formula in B1. I never realized that up
till now the formatting has been conditional on the cell I'm actually
in. This time, condition is dependent on an outside cell, and that
seems to be what is stumping me.

Can someone provide an example, ple? TIA. :oD