This is a relatively small issue and typically doesn’t have much impact on the game, but worth taking a quick moment to clarify.
Most folks assume that the player’s feet have to be behind the touchline during a throw-in, but a throw-in is legal as long as part of each foot is in contact with the touchline, including when most of the feet are inside the field of play as shown in the images on the right and below.
It is also legal when the feet are completely outside the field of play, of course. They don’t have to make contact with the touchline in this case.
I hope this helps reduce unnecessary “bad throw!” calls.
NorCal Soccer Dad 
Hey dude
Is it still the same or have the rules been updated?
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Still the same.
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Rugby union. If at a throw in the yhrower has his heels on the line which is alliwed but at the time of the throw he lifts his heels and throws the ball from an elevated position is the not a fowl throw ??
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Yes, that is a foul throw in soccer. A part of each foot has to touch the line until the ball is released from the hands.
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