The command syntax has four parts:  a command keyword, a component
 keyword(s),  one or more parameters, and, optionally, one or more
 qualifiers.  For example,

      Command Keyword    Component        Parameter        Qualifier

         SHOW            ACTIVE CIRCUITS  CHARACTERISTICS  TO file-id
                         KNOWN CIRCUITS   COUNTERS
                         CIRCUIT line-id  STATUS
                                          SUMMARY

 For each command, you must supply a keyword, a component, and one
 or more parameters from the parameter list.  In general, the
 order in which you specify parameters makes no difference.  Braces
 around keywords and parameters indicate that you must choose one of
 the options.  Lowercase letters indicate user-supplied component and
 parameter values.