VMS Help TCPIP Services, Programming Interfaces, RPC Client Routines, clnt_call  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    A macro that calls a remote procedure.
    Format
      #include  <rpc/rpc.h>
      enum clnt_stat  clnt_call(CLIENT *handle, u_long procnum,
                      xdrproc_t inproc, char *in, xdrproc_t outproc,
                      char *out, struct timeval timeout);

  Additional Information (explode) :

• Arguments
• Description
• Return Values