If, after contact with another ball, striker's or any other ball is forced
off the table, the non-striker shall add two points to his score. (_Rule
18._) {321}
For a foul stroke the striker cannot score, and his opponent plays from
hand. His ball shall be placed on the centre spot, the red ball shall be
spotted, and his opponent shall play from the D.
For refusing to continue the game when called upon by the referee or marker
to do so, or for conduct which, in the opinion of the referee or marker, is
wilfully or persistently unfair, a player shall lose the game. (_Rule 18._)