When I was in school (beige Macintosh era) our teachers told us the keyboard shortcuts as "open apple-S" or "open apple-Q". At the time the keyboards did indeed have both the looped circle and the Apple logo[0], but both were open apples. I had an Apple IIe at home but hadn't figured out keyboard shortcuts yet.
0: https://deskthority.net/wiki/File:Apple_Extended_II_Salmon_U...