How do I map the Meta key to Option on Sierra?

Question

There doesn't seem to be a box to check to achieve this under System Preferences->Keyboard on Mac OS Sierra - or I haven't found it.

Answer 1

The concept of a Meta key only exists in certain applications, and they use their own preferences. For instance, in Terminal, go to Preferences -> Profiles, select a profile, go to the Keyboard tab and check Use Option as Meta key