addrsx
static void addrsx(int, int, int, int, boolean);
addrsx(lx, ly, hx, lowy - 2, discarded);
addrsx(lx, ly, lowx - 2, hy, discarded);
addrsx(lx, hiy + 2, hx, hy, discarded);
addrsx(hix + 2, ly, hx, hy, discarded);