http://www.robvanderwoude.com/parameters.php
Windows NT 4 introduced a set of new features for command line parameters:
| %CmdCmdLine% | will return the entire command line as passed to CMD.EXE |
| %* | will return the remainder of the command line starting at the first command line argument (in Windows NT 4, %* also includes all leading spaces) |
| %~dn | will return the drive letter of %n (n can range from 0 to 9) if %n is a valid path or file name (no UNC) |
| %~pn | will return the directory of %n if %n is a valid path or file name (no UNC) |
| %~nn | will return the file name only of %n if %n is a valid file name |
| %~xn | will return the file extension only of %n if %n is a valid file name |
| %~fn | will return the fully qualified path of %n if %n is a valid file name or directory |
| Note: | %CmdCmdLine% and %* will leave all delimiters intact, except, in Windows 2000 and later, leading spaces before the first argument |