Windows is famous as a graphical user interface and many computer users tend to forget (or never knew) that there are also very useful command line functions in Windows. In fact, there is a great deal more to Windows than just point and click. The keyboard and the command line can be substantial adjuncts to the mouse and icons. There are two basic features involving a command line. One is the entry 'Run" (or "Start Search" in Vista) that is in the Start menu and the other is the command prompt window.