At the start of each innings and of
each day's play and on the resumption of play after any interval or
interruption the Umpire at the Bowlers'
end shall call "play".
No Bowler shall have a trial run-up after "play" has been called
in any session of play, except at the fall of a wicket when an
Umpire may allow such a trial run-up if
he is satisfied that it will not cause any waste of time.
