Penalty kick
The provision as it is printed, and everything on Ruleside that turns on it.
Where the goal line can be checked for goalkeeper encroachment and goal/no goal through the use of technology (e.g. GLT, the VAR system), it is recommended that the assistant referee be positioned on the touchline, in line with the penalty mark (which is the offside line), as being on the goal line creates a risk that they may not be able to get back into a position to judge offside if the kick rebounds.
Verdicts that turn on it 1
Walk the tree to any of these and this clause is part of the answer.
The Laws of the Game are published by The IFAB and quoted here for the purpose of explaining the decisions on this site. Ruleside is not affiliated with The IFAB or FIFA. Every clause of Practical guidelines for match officials that Ruleside cites.