uline
uline(k, vscreen[k], &blanks);
uline(k, vscreen[k], pscreen[offs + i - 1]);
uline(i, vscreen[i], &blanks);
uline(offs, vp1, vp2);
uline(size - 1, vp1, vp2);
uline(i, vp1, vp2);
void uline(int, struct video *, struct video *);