NAME
        ReplyMsg -- put a message to its reply port

   SYNOPSIS
        ReplyMsg(message)
                 A1

        void ReplyMsg(struct message *);

   FUNCTION
        This function sends a message to its reply port.  This is usually
        done when the receiver of a message has finished and wants to
        return it to the sender (so that it can be re-used or deallocated,
        whatever).

        This call may be made from interrupts.

   INPUT
        message - a pointer to the message

   IMPLEMENTATION
        1> Places "NT_REPLYMSG" into LN_TYPE.
        2> Puts the message to the port specified by MN_REPLYPORT
           If there is no replyport, sets LN_TYPE to "NT_FREEMSG" (use this
           feature only with extreme care).

   SEE ALSO
        getmsg(), putmsg(), exec/ports.h