/USERNAME=(user_name [,user_name ,... ,user_name])

   This qualifier is used to specify targets to be watched by username.

   If more than one username is specified, the list must be enclosed in
   parenthesis.

   Usernames may contain the standard VMS * and % wildcard characters.

   Standard DECnet nodenames may also be prefixed to the usernames, for
   watching users on other nodes. (See the PEEK Watching Subtopic:
   Node_Names.)

   Different nodenames can be used for each different username in the
   list, and standard VMS * and % wildcards are supported in nodenames.

   A nodename applies only to the one username in the list to which it
   is prepended.

   The NEXT and PREVIOUS hot-keys are used to end watching one process and
   start watching the next or previous one matching the specifications.

   Examples:

         $ PEEK /USERNAME=(JONES,NODEA::SMITH,BROWN)

   In this example, a process belonging to the first user in the list
   will be watched first. When the /NEXT hot-key sequence is entered,
   watching will begin on the next process belonging to that user (if
   any). After all the first user's processes have been watched, PEEK
   will begin watching the first process for the next user in the list,
   in this case on DECnet node NODEA. When all of SMITH's processes on
   NODEA have been watched, the first process for user BROWN on the
   current node will be watched.

         $ PEEK /USERNAME=D*

   In this example, a process will be watched whose username starts with
   the letter "D". When the /NEXT hot-key sequence is entered, watching
   will begin on the next process beginning with the letter "D", if any,
   etc.

   Note: On Alpha with MS30 you can (by watching the MS Server process
   for a user) track with the user as he switches NDC sessions, or you
   can watch an individual NDC session by using the Peek/Spy
   /SINGLE_WINDOW qualifier.