NAME
        CxMsgType -- obtain the type of a commodity message. (V36)

   SYNOPSIS
        type = CxMsgType(cxm);
        D0               A0

        ULONG CxMsgType(struct CxMsg *);

   FUNCTION
        This function returns the type of a commodity message. Possible values
        of 'type' are defined in <libraries/commodities.h>. most commodity
        messages are of type CXM_IEVENT.

   INPUTS
        cxm - the commodity message to inquire about (must NOT be NULL)

   RESULTS
     type - the type of the commodity message, possible values are defined
               in <libraries/commodities.h>