While at the prompt, typing in one or more letters a file or directory name
contains will auto complete the name in alphabetical order. For example,
when at the C:\> prompt type the below command.
C:\>cd p
After the above command has been typed, instead of pressing the enter press
the tab key. When you press the tab key the first directory that begins with
p will be automatically typed into the command. Continuing to press the tab
key will cycle through all available directories including the "Program
Files" directory. This shortcut can be used any time you need to type a file
name or directory in a command.