   ACCEPT identifier-1
   ~~~~~~
          FROM { COMMAND-LINE                                }
          ~~~~ { ~~~~~~~~~~~~                                }
               { ARGUMENT-NUMBER                             }
               { ~~~~~~~~~~~~~~~                             }
               { ARGUMENT-VALUE                              }
               { ~~~~~~~~~~~~~~                              }
               [ ON EXCEPTION imperative-statement-1 ]
                    ~~~~~~~~~
               [ NOT ON EXCEPTION imperative-statement-2 ]
                 ~~~    ~~~~~~~~~
 [ END-ACCEPT ]
   ~~~~~~~~~~
