For PEEK/SHOW USERS, only a single leading nodename may be used.

   This single leading nodename applies to all of the following user
   specifications on the SHOW USERS command line.

   Example: $ PEEK/SHOW USERS NODEA::J_DOE,P_SMITH

   In this example, Peek will show users J_DOE and P_SMITH on NODEA.

   Wildcards may still be used in the single leading nodename in a
   SHOW USERS command. See the top-level PEEK Subtopic:
   Commands SHOW USERS.