(* State something about hook direction *)

Lemma locProjR (W1 W2 : world) l s1 s2:
(s1 \+ s2) \In Coh (W1 \+ W2) -> l \in dom W2.1 ->
s2 \In Coh W2 -> getStatelet (s1 \+ s2) l = getStatelet s2 l.