Sorry, I assumed the implied word 'more' was obvious to everyone who has used a computer keyboard in the last 30 years.

And an Apple key on a bunch of others.

It hasn't been an "Apple key" since 2010 or so. On all recent machines, it's just labeled as "Command", with the ⌘ symbol.

Ah yes, the well-known U+2318 Place of Interest Sign :D

They've been using that symbol on the Command key for the last 40 years. It's probably safe to call it "well-known" by now.

(Early Apple keyboards didn't have an Apple logo on the command key either! That was added in 1986 on the first ADB keyboard -- it was added for compatibility with the Apple IIgs.)

I think I remember calling it the butterfly key at some point.