I do not believe it could be possible to detect BOLD with a formula. Because it is font formatting. I don't think ASCII is used to create bold characters and I am not sure what else would come close to detecting it. You could write a macro that detects BOLD print and highlights the row. I would recommend that it be a button you press on your spreadsheet, but you could make it automatic. The latter can slow down your spreadsheet greatly, but not knowing your spreadsheet, maybe it wouldn't be an issue.