on rightclick on a sign:
	line 1 of clicked block is "§f============"
	line 2 of clicked block is "&e<<Checkpoint>>"
	line 3 of clicked block is "&b<<Rightclick>>"
	line 4 of clicked block is "§f============"
	player is on ground
	set {checkpoint.%player%} to location of player
	message "§e<<Checkpoint>>"