Sends and receives data to and from a DECforms form. Control text
       items can be also sent and received.

       Format

         WITH_FORM  form-name  IN  file-name

           SEND FROM datatrieve-source [USING exchange-record] [,]

                           .              .          .

                           .              .          .

                           .              .          .

              TO decforms-name

           RECEIVE FROM decforms-name

              TO datatrieve-destination [USING exchange-record] [,]

                           .              .          .

                           .              .          .

                           .              .          .

           [SEND_CONTROL_TEXT send-control-item [,...]]

           [RECEIVE_CONTROL_TEXT receive-control-item [,...]]