iop              1182 src/system.c       ScmObj ap, iop;
iop              1212 src/system.c           SCM_FOR_EACH(iop, iomap) {
iop              1213 src/system.c               ScmObj port, elt = SCM_CAR(iop);
iop              1222 src/system.c                   port = SCM_CDAR(iop);
iop              1226 src/system.c                                 SCM_CDAR(iop));