How do I Ctrl-R on Mac?

Does anyone know how to use the Ctrl-R shortcut that comments a block of code in one go on MacOS? I've tried Cmd-R but that doesn't work. If anyone has any suggestions it would be very much appreciated.

Thank you.

[MEILING JIN]

try cmd + /

Answer 1

[Geoff Hayes]

Katy - on my version of MATLAB (on a Mac), I can comment a block of code with Cmd /. (Note that Cmd T uncomments the block of code.)

[Katy Soto]

That did the trick. Thank you very much!

[Niklas Kurz]

How do you accomplish that? cmd + shift + 7 ? No effect

Answer 2

[Steven Lord]

FYI to search for or customize the keyboard shortcuts, see the Keyboard preferences as described on this documentation page. Searching for "comment" will find you the correct action and show you its shortcut.