If you have a Mac and not a English keyboard:
Cmd-/ is still easy to produce.
Follow the below steps:
- Just go into the Mac's System Settings, Keyboard, tab "Input Sources" or whatever it might be called in English
- Add the one for English (shows up as ABC, strange way to spell English).
Whenever you want a Cmd-/, you have to change to the ABC keyboard (in your menu row at the top of your screen,if you have ticked it to be shown there in the System Settings - Keyboard tab).
Cmd and the key to the left of the right "shift key" gives you Cmd-/.
P.S: Don't forget to switch back to your normal keyboard.
