struct FMH7 {
/*
 * This structure is function management header 7
 * (FMH-7), use for provide the error description.
 */
unsigned char length; /* Length in binary of FMH7 (7)*/
unsigned char type;
unsigned long sense;
struct flg1  { /* describes next field */
               /* if errlg = 1, error log var. presence;
                * otherwise no error log.
                */
	       unsigned int errlg: 1;
	       unsigned int rsrv : 7;
	     } nfld;
};