
Usage: /UNFORGET <username>
  Remember  all those users you have forgotten.  Re-allows you to read
  all  the  messages  sent  from  those forgotten users.  /UNFORGET by
  itself will display the list of forgotten users.

  Examples:
     /UNFORGET *    (remembers everybody you have forgotten)
     /UNFORGET john

  See Also
     /FORGET

