"You can use Command-line reference to familiarize yourself with new and enhanced command-line tools, to configure your command prompt, to learn about the command shell, and to automate command-line tasks by using batch files or scripting tools."
"The command shell is a separate software program that provides direct communication between the user and the operating system. The non-graphical command shell user interface provides the environment in which you run character-based applications and utilities.
The command shell executes programs and displays their output on the screen by using individual characters similar to the MS-DOS command interpreter Command.com.
The Windows XP command shell uses the command interpreter Cmd.exe, which loads applications and directs the flow of information between applications, to translate user input into a form that the operating system understands."