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