SM_UP
con_scroll(vc, vc->vc_top, vc->vc_bottom, SM_UP, 1);
con_scroll(vc, vc->state.y, vc->vc_bottom, SM_UP, nr);
if (dir == SM_UP) {
case SM_UP:
if (dir == SM_UP) {
if (dir == SM_UP) {
case SM_UP:
if (dir == SM_UP) {
case SM_UP: