1    /ALL

       /ALL
       /NOALL (default)

    Display all messages shown with the last DIRECTORY command.

2    /CONFIRM

       /CONFIRM
       /NOCONFIRM (default)

    When /CONFIRM is specified, you will prompted to confirm whether
    or not to display each selected message.

3    /CONTENT

       /CONTENT (default)
       /NOCONTENT

    Specify /NOCONTENT if you only want to read the message envelope
    and header.