1 /ALL
/ALL /NOALL (default) Display history information for all messages shown with the last DIRECTORY command. When used in conjunction with the /CHANNEL qualifier, only histories of those messages shown with the last DIRECTORY command for the specified channel will be shown.
2 /CHANNEL
/CHANNEL=name Specifies the name of the channel for which to show message histories. Wild cards are not permitted.
3 /CONFIRM
/CONFIRM /NOCONFIRM (default) When /CONFIRM is specified, you will be prompted to confirm whether or not to display the history for each selected message.