The match details, including runs and dismissals, are recorded by two official scorers, one representing each team. The scorers are directed by the hand signals of an umpire (see image, right). For example, the umpire raises a forefinger to signal that the batter is out (has been dismissed); he raises both arms above his head if the batter has hit the ball for six runs. The scorers are required by the Laws to record all runs scored, wickets taken and overs bowled; in practice, they also note significant amounts of additional data relating to the game. A match's statistics are summarised on a scorecard. Prior to the popularisation of scorecards, most scoring was done by men sitting on vantage points cuttings notches on tally sticks and runs were originally called notches. According to Rowland Bowen, the earliest known scorecard templates were introduced in 1776 by T. Pratt of Sevenoaks and soon came into general use. It is believed that scorecards were printed and sold at Lord's for the first time in 1846. Spirit of the Game Besides observing the Laws, cricketers must respect the "Spirit of Cricket", a concept encompassing sportsmanship, fair play and mutual respect. This spirit has long been considered an integral part of the sport but is only nebulously defined. Amidst concern that the spirit was weakening, in 2000 a Preamble was added to the Laws instructing all participants to play within the spirit of the game. The Preamble was last updated in 2017, now opening with the line: "Cricket owes much of its appeal and enjoyment to the fact that it should be played not only according to the Laws, but also within the Spirit of Cricket". The Preamble is a short statement intended to emphasise the "positive behaviours that make cricket an exciting game that encourages leadership, friendship, and teamwork." Its second line states that "the major responsibility for ensuring fair play rests with the captains, but extends to all players, match officials and, especially in junior cricket, teachers, coaches and parents." The umpires are the sole judges of fair and unfair play. They are required under the Laws to intervene in case of dangerous or unfair play or in cases of unacceptable conduct by a player. Previous versions of the Spirit identified actions that were deemed contrary (for example, appealing knowing that the batter is not out) but all specifics are now covered in