Recently, I replaced my Windows laptop with a MacBook Pro. I'm very happy that I've made the choice to switch to OS X. It's indeed very user friendly. I've noticed that when you press a key on your keyboard longer than normal that you can choose different variants (with accents and things like that). As a student in electronics engineering I need te curly braces {} and sqaure brackets[] often. Can I change the way that the ( and ) keys work and add the square brackets and curly braces to it so they appear as an option when pressing the () keys?
Edit: (I know I can type them by using option and option and shift key, but I find the little popup menu very nice feature)…
Edit 2: If this is possible, I definitely want to add the ohm sign, and other symbols that I use on a regular base…
Best Answer
For example, you can add the following:
Files in /System are protected by System Integrity Protection. If you wish to edit the file, you will need to disable this if you haven't done so already.
Disable OS X El Capitan Rootless and permit write actions to System Integrity Protection locations
You can re-enable it once you've edited the file.