Section SIMULATION_SEQUENCES.
Context L1 L2 index order match_states (S: fsim_properties L1 L2 index order match_states).
End SIMULATION_SEQUENCES.
(** ** Composing two forward simulations *)

Lemma compose_forward_simulations:
forall L1 L2 L3, forward_simulation L1 L2 -> forward_simulation L2 L3 -> forward_simulation L1 L3.