@ids1024 surprisingly enough, the same keystrokes, in order listed, will also merely calculate the average of a list of integers on APL programming language.
Go figure...

BTW, this is best practiced while playing the new-ish "5D chess" game (on Steam, among others), where, on a YouTube vid you can hear: "Ah yes, the classic: two rows up and back in time" (and the expected comment: "ah, yes... the CLASSIC...")
😂