What does this mean?

Hi, I'm reading about the certain keyboard shortcuts and CHR$ codes on the PET computer, and found this table from "The Complete Commodore Innerspace Anthology":

(click to zoom)
table.jpg

I understand how to what the CHR$ and "keyboard combination" columns mean and can invoke those functions that way, but what does the middle column mean "ESC/RVS"?
Obviously it has something to do with the ESC/RVS keys, but I can't figure out what the column is trying to say. It doesn't seem to be a key combination (i.e. pressing ESC/RVS then the G key, for instance, does not ring the bell sound).

Anybody know?

Thanks.

Attached Images

• table.jpg (70.7 KB)