Analysis of information sources in references of the Wikipedia article "Throw-in" in English language version.
Law 15, The Throw In
{{cite journal}}: Cite journal requires |journal= (help)The ball is out when it has passed the line of the flag posts on either side of the ground, in which case it shall be thrown in straight.
A Ball in touch is dead, consequently the side that touches it down must bring it to the edge of the touch, and throw it straight out at least six yards from touch.
When a Ball goes out of bounds (the same being indicated by a row of posts) it shall be brought back to the point where it crossed the boundary-line, and thrown in at right angles with that line
A free-kick if ball out of bounds
If the Ball is kicked beyond the prescribed limits of the Ground, it must be kicked straight in again; and then must not be touched by the Hands, or Arms below the Elbow
If the ball is kicked out of the ground (to be fixed before commencing the game) it is dead, and the first player who can pick it up shall bring it to the point where it left the ground, and be entitled to kick it as he thinks fit
A ball in touch is dead, and the first player who touches it down must kick it out straight from the place where it entered touch.
When the ball goes out of the ground by crossing the side lines, it is out of play, and shall be kicked straight into the ground again from the point where it is first stopped.
When the Ball is dead, it must be thrown in, or a bully formed parallel to the place where it stopped: these are to take place alternately
When the ball is dead, a bully must be formed opposite to the spot where it stopped
When the ball is in touch the first player who touches it shall kick or throw it from the point on the boundary line where it left the ground, in a direction at right angles with the boundary line.
When the ball is in touch, a player of the opposite side to that which has kicked it out shall throw it from the point on the boundary line where it left the ground
When the ball is in touch, a player of the opposite side to that which kicked it out shall kick it in from where it went out; and no player be allowed within six yards of the ball, until kicked.
A goal shall be won when the ball passes between the goal posts or over the space between the goal posts (at whatever height), not being thrown, knocked on, or carried.
A goal shall be won when the ball has passed between the goal-posts under the tape or bar, not being thrown, knocked on nor carried by anyone of the attacking side
A goal shall not be scored from a throw in
When a player has kicked the ball any one of the same side who is nearer to the opponent's goal line is out of play
When a player kicks the ball, or it is thrown in from touch, any one of the same side who at such moment of kicking or throwing is nearer to the opponents' goal-line, is out of play
The player throwing the ball must stand on the touch line facing the field of play
[T]he player throwing it in shall not play it until it has been played by another player
When the ball is in touch, the first player who touches it shall throw it from the point on the boundary line where it left the ground, in a direction at right angles with the boundary line, and it shall not be in play until it has touched the ground
When the ball is in touch, the first player who touches it shall throw it from the point on the boundary line where it left the ground, in a direction at right angles with the boundary line, to a distance of at least six yards
In the event of any infringement of Rules 5, 6, 8, or 9, 12, or 14, a free kick shall be forfeited to the opposite side from the spot where the infringement took place.
Two linesmen shall be appointed, whose duty (SUBJECT TO THE DECISION OF THE REFEREE) shall be to decide when the ball is out of play, and which side is entitled to the corner-flag kick, goal-kick, or throw in.
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