Though a computer does not have a "refresh" button, the F5 button does have refresh capabilities that enables its user to reload a page in any Internet browser. This functionality allows a person waiting for something to appear on a site to access it quickly after it is updated.
The F5 key also serves other purposes when used in Microsoft Word or Microsoft PowerPoint. For example, pressing the F5 key in Microsoft Word allows a user to find, replace and go to a specific window. In PowerPoint, a user can quickly start a slide show by pressing the F5 key.