/ALL
/ALL
/NOALL (default)
Display all messages shown with the last DIRECTORY command.
/CONFIRM
/CONFIRM
/NOCONFIRM (default)
When /CONFIRM is specified, you will prompted to confirm whether
or not to display each selected message.
/CONTENT
/CONTENT (default)
/NOCONTENT
Specify /NOCONTENT if you only want to read the message envelope
and header.