Period

Also known as a full stop or dot, a period ( . ) is a punctuation mark commonly found on the same United States Qwerty keyboard key as the greater than ( > ). Computers use a period in numerous ways, below is a listing of some of these ways.

1. With many IBM compatible computers and their operating systems, a period is used to separate the filename from the file extension.

2. The period is used to help create a URL and break up important portions of the URL. For example: http://www.computerhope.com.

3. Used as or part of a wild card.  

• An additional listing of computer keyboard keys can be found by clicking here.

Also see: Dot, Ellipsis, Keyboard definitions