mrd_map_element - Map an absolute element address to a zero
    relative one.

    Windows NT         mrd.dll
    UNIX               /usr/lib/libmrd.a
    OpenVMS            MRD$RTL.EXE

    #include <mrd_common.h>
    #include <mrd_message.h>

    int mrd_map_element(
        const robot_info_t *robot_info,
        const int           address,
        char               *result) ;