review

REVIEW  -  read messages

Usage:  REVIEW message-sequence

The REVIEW command is the same as READ, except that it does not default
  to READ UNSEEN.  The REVIEW command is used to read a message or set 
  of messages.  After each message is displayed, you will be in READ 
  mode at which point you can take some action on the current message, 
  like DELETE, REPLY, FORWARD, and so on.  Compare to TYPE, which only 
  displays messages.

Examples:
    MM>review 4:9		#reads messages 4 to 9
    MM>review subj meeting	#reads messages with "meeting" in subject

Good use of message-sequences gets useful results, such as:
    MM>review from walter after 4/1/90 subj mail

For more help type "help" and one of these topics:
  read   type   message-sequence   basic   set default-read-command
  read-mode help