How do I simulate the Insert key in Windows on a MacBook Pro?

Question

Somehow in my code editor and command line I keep toggling the Insert key, but I'm not sure how. I can toggle it by clicking on OVR/INS in the status bar, but what is the key combo that I'm magically fat fingering?

Answer 1

Apparently fn + return is the winner.

Answer 2

I have been able to find no way to do so, with a modern Macbook Pro. (The keyboard view only shows a minimal keyboard)

Apparently <kbd>fn</kbd> + <kbd>return</kbd> is the winner.

Not on newer Macs, that key combination is just 'enter' (instead of 'return').