x_errwin
cx.x_errwin = 0;
if ((w = x->x_errwin) == NULL) {
if ((w = x->x_errwin = openiwin(ERRLINES, buf)) == NULL) {
if (cx.x_type == X_FILE && cx.x_errwin != 0) {
waitnl(cx.x_errwin);
closeiwin(cx.x_errwin);
cx.x_errwin = 0;