The following commands are available through ph's interactive
mode.  Some commands are only available to users who have logged
in to the Nameserver, and two ("add" and "delete") are limited to
users with special privileges:

   add        - add new people or things to the database
               (privileged)
   bye        - synonym for "quit"
   change     - used in conjunction with the "make" command to
                change the field contents of multiple ph entries
   ^D         - synonym for "quit"
   delete     - remove people or things from the database
                (privileged)
   edit       - change, add, or remove a field from your entry
   exit       - synonym for "quit"
   fields     - list the fields in the database
   help       - get help on ph commands and concepts
   login      - login to ph
   logout     - logout of ph
   make       - change, add, or remove a field in your entry
   me         - print all the fields of the logged-in user
   passwd     - change your ph password
   password   - a synonym for "passwd"
   ph         - (in command mode) lookup people or things in the
                database, set switches, etc.; (in interactive
                mode) a synonym for "query"
   query      - look up people or things in the database
   quit       - exit ph
   register   - change the contents of your "email" field to the
                account from which you are currently logged into
                ph
   status     - print a message describing the current status of
                the Nameserver database
   switch     - set ph switches

Ph's on-line help facility offers detailed information on how to use
all of the commands listed above except those that are identified as
synonyms.