A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
FWIW, I think I figured it out. From early screencaps, it seems that Microsoft originally spelled the verb phrase "BACK UP" as "BACKUP," which is, of course, the noun form. So that may have been what you were reacting to. (I realize that you'll probably never see this, having unsubscribed from this thread, but here it is for anyone else who wonders.) Best wishes