18. The computer-readable storage device of claim 15 , wherein the list of key phrases is used to populate a menu of key phrases available to the user.
18. The computer-readable storage device of claim 15 , wherein the list of key phrases is used to populate a menu of key phrases available to the user. 19. The computer-readable storage device of claim 18 , wherein the user can use the menu of key phrases to select searchable presentation source files.