These routines translate a clearance from binary to hexadecimal and back again. Refer to the btohex(3TSOL) man page.
char *h_alloc(const unsigned char id); void h_free(char *hex); char *bcleartoh_r(const bclear_t *clearance, char *hex); char *bcleartoh(const bclear_t *clearance); int htobclear(const char *s, bclear_t *clearance);