unboard
unboard(from, from, 1); /* defense */
unboard(from, from, 0); /* defense */
unboard(from, to, 0); /* offense */
unboard(to, to, 1); /* defense */
unboard(to, to, 0); /* defense */
unboard(to, from, 0); /* offense */
unboard(ship, ship, 0); /* all offense */
unboard(ship, ship, 1); /* all defense */
unboard(to, from, 0);
unboard(from, to, 0);
unboard(sq, sp, 0);
unboard(sp, sq, 0);
unboard(sp, sp, 1);
unboard(sp, sp, 1);
void unboard(struct ship *, struct ship *, int);
unboard(ms, ms, 1); /* cancel DBP's */
unboard(ms, ms, 0); /* cancel offense */