COF_LHDR
coargs->flags |= (COF_THDR | COF_LHDR);
if ((coargs->flags & COF_LHDR) && !(coargs->flags & COF_ADDR) &&
coargs->flags &= ~COF_LHDR;
coargs->flags |= (COF_LHDR | COF_CHDR);
coargs.flags |= COF_THDR | COF_LHDR | COF_CHDR;