http://www.answers.com/topic/snooker-rules
Refer to this paragraph:
When the nominated colour is potted, the player will be awarded the
correct number of points (yellow, 2; green, 3; brown, 4; blue, 5;
pink, 6; black, 7). The colour is then taken out of the pocket by
the referee and placed on its original spot. If that spot
is covered by another ball, the ball is placed on the highest
available spot. If there is no available spot, it is placed as
close to its own spot as possible in a direct line between that
spot and the top cushion, without touching another ball. If there
is no room this side of the spot, it will be placed as close to the
spot as possible in a straight line towards the bottom cushion,
without touching another ball.
Can any experts here explain the bold words in layman terms? What
will happen of the position of the coloured ball has been occupied?
What do the top and bottom cushions refers to?