I think you mean the copy command in the windows command prompt?
If so, here is the syntax:
copy [/d] [/v] [/n] [{/y|/-y}] [/z] [{/a|/b}] Source [{/a|/b}] [+ Source[{/a|/b}] [+ ...]] [Destination[{/a|/b}]]
Parameters/d : Allows the encrypted files being copied to be saved as decrypted files at the destination./v : Verifies that new files are written correctly.
/n : Uses a short file name, if available, when copying a file with a name longer than eight characters, or with a file extension longer than three characters.
/y : Suppresses prompting to confirm that you want to overwrite an existing destination file.
/-y : Prompts you to confirm that you want to overwrite an existing destination file.
/z : Copies networked files in restartable mode.
/a : Indicates an ASCII text file.
/b : Indicates a binary file.
Source: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/copy.mspx?mfr=true
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