taskbar• And the taskbar is a reasonably good way of implementing the underlyingstructure.• Simultaneously, it shows up on the taskbar.• Start more programs, and more stuff shows up on the taskbar.• You can play with the taskbar itself in ways that make little sense but may provide some amusement to bored teen-agers.• The taskbar also has some important controls that are, alas, annoyingly invisible.