Image Size keyboard shortcut on Mac

Image size shortcut, unable to locate the first key in the shortcut listed in the  am on a Mac, can someone send a photo of the mac keyboard with that first mystery key circled? I usually use a PC is my only excuse for not knowing this!

I am looking at Image> Image Size from the upper menu bar in PS Creative Cloud/ so newest

it begins with the mystery key

and is followed by the

- command |

Also not sure how to hit those 4 keys at one time so need some help there as well.

Thanks much!! !