how do I change the cursor style in Sublime Text 3

Question

At some point my cursor changed from a vertical bar to an underbar. I must have pressed some magic combination of keys. Any idea how to change it back?

Answer 1

On mac OS, to toggle between vertical and horizontal cursor in SublimeText 3:

command + option + o

Answer 2

In Windows PC You can simply press insert or fn+0 (0 on numpad) or fn + delete or insert.