Text cursor turned into horizontal cursor, how to undo this? Maybe a silly problem, but a real one. Suddenly my text cursor turned into horizontal one:


How can I set it back to a regular one?
I've tried many shortcuts to undo this, I also can't find anything in text editor options... I would be grateful for some help.
Press the Insert key.  The horizontal cursor means you're in "overwrite" mode, which can be toggled on and off with this key.