Anyone who has used the World Wide Web realizes that selecting a hypertext link may not successfully take you to another. The machine to which that link points may be down, or simply inaccessible. The link may even be dead, meaning that it does not point to a valid destination.
Selecting a dead link often unloads the current page, but doesn’t load a new page. Most browsers display a blank page or post an error message. You may or may not be left on the current page, depending on the type of error and the browser being used.