As the name states, during a ground-fault (when the current going out is significantly different than the current going in) the GCFI interupts the current. Usually by a switch of some sort. (Pushing the "test" button produces that click, and cuts off the current)
He could either use the tab key to indent, if you want to make the ruler visible, you can go to the view tab and click the check mark next to show ruler.
Answer:
Explanation:
Allow you to view the document in different ways. Sorry if I am wrong. I am dumb
God bless, stay safe, and good luck! :)