-key="\HKEY_LOCAL_MACHINE\Software\YourApp\YourValue" -key=HKEY_LOCAL_MACHINE/Software/YourApp/YourValue -k=HKLM\Software\YourApp\ThisKeysDefaultValueToTake\
Specify the registry key where the patch software will be located. You can choose the backslash as well as the forward slash. Signal the default value by giving "" as the value part like \Software\Key\ and use "@" if you need to quote and you shell would take "\Software\Key with space\" as an escaped quoting character.