To copy a file from one place to another, you use the command "Copy", and you can delete files using "Del", as demonstrated below. The "Move" command performs the same function except that it moves instead of copies (to put it plainly). When you use a drive letter with a colon not followed by a slash as part of an address (e.g. "A:stuff"), it uses the current directory of that drive rather than the root directory of that drive as the base. For example, if the current directory of A: is A:\glob, and the user types "dir A:glub" it will be as though he typed "dir A:\glob\glub". If the current drive is A: you could just type "dir glub". The period has special meaning in MS-DOS. A single period refers to the current directory. Two periods refer to one directory back from the current one, and three means two directories back, etc. See the example below.   Proceed:     <-- More Examples           -->