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Right from the wiki:

Quote:

SetPlayerRaceCheckpoint(playerid, type, Float, Float:y, Float:z, Float:nextx, Float:nexty, Float:nextz, Floatize); playerid The ID of the player to set the checkpoint for type Kind of checkpoint.0-Normal, 1-Finish, 2-Nothing(Only the checkpoint without anything on it), 3-Air normal, 4-Air finish Float X-Coordinate Float:y Y-Coordinate Float:z Y-Coordinate Float:nextx X-Coordinate of the next point, for the arrow facing direction Float:nexty Y-Coordinate of the next point, for the arrow facing direction Float:nextz Y-Coordinate of the next point, for the arrow facing direction Floatize Size (diameter) of the checkpoint

Quote:

Creates a race checkpoint. When the player enters it, a OnPlayerEnterRaceCheckpoint callback is fired.

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