Why are there exit button provided by application?

1. What is exit button?
2. What is the point of push to exit buttons?
3. Where do you put an exit button?

What is exit button?

(eXit button) Also called a "close" or "exit" button, clicking or tapping the X removes the current window, dialog box or popup message from the screen. It is also used to delete text and graphics.

What is the point of push to exit buttons?

What the Push-to-Exit Button Does. A push-to-exit button does exactly what its name describes: It allows you to exit when you push it, if your door doesn't open with traditional handles. It is a button installed on the inside of a room, and is wired to the electric lock equipped on the door.

Where do you put an exit button?

This is normally along the top. Any button that takes you out of a screen (including close) should follow the "next" button convention. A next button should be on the right hand side, as people associate this with next (think of turning to the next page in a book).