The HELP command allows you to obtain help for any command and command
 option.

 When entering a command, you can also obtain the list of options available
 at that point in the command.  To do this, type a question mark (?) at the
 end of the command line.  This lists the available command options, and
 prompts you for the desired option (if any).  At the prompt, enter the
 option plus the rest of the command line.