(Solved) Typing issue

I hit must have hit something on my keyboard and now instead of displaying a | looking symbol that shows you where the next button you type will go, it now looks like a _ and it deletes deletes whatever is to the right automatically when you press a button.

What is this function called? And how do I fix this? I've looked at all the menu options on the Arduino Program and can't seem to find anything that seems similar.

Look for a key up near the delete key that says INS or Insert. You have it in overwrite mode. Hit that key again and it will go back to insert mode.

Thank You!

That seemed to work!