Climbing calls!

TAKING IN	A call from the leader that he is pulling up, hand over hand, with all of the slack rope between him and his second
THAT'S ME	A call from the second to indicate that all of the slack rope between him and the leader has been pulled up
CLIMB WHEN YOU ARE READY	Call from leader that comes only after he has put on his belay device, checked all knots, gates shut and done up, tight on belay, in line with belay, and is able to brake correctly
CLIMBING	Call from the second, before starting to climb, after this call, the second does not climb until the leader calls out “ok” or “climb on”
OK or CLIMB ON	Call from the leader to affirm he heard that the second is about to climb
TAKE IN	If the rope has not been taken in for some time, or slack rope has been introduced due to unclipping a runner, etc.
SLACK	Indicates that slack rope is needed, maybe to reverse a move or unclip a runner
TIGHT	This is called by the second, either when making an awkward move or when expecting to fall off
SAFE	A call from the leader to indicate that there is no possibility of him coming to harm. The leader will normally say 'safe' at the top of a route to the belayer out of courtesy.
YOU'RE OFF or OFF BELAY	Call from the second in response to the “safe” call from the leader
RUNNER ON	Call from the leader, to indicate that the first runner has been placed and the second must now be ready to hold a fall from a different direction
BELOW	This is a call from anyone who has accidentally dislodge a stone (e.g. from a crag or a route). This call must be shouted in full volume. Once this call is given, those below should not look up to avoid receiving an injury.
ROPE BELOW	This is a courtesy call when lowering or throwing out a rope, or when abseiling, top roping etc.