include "basic_2/grammar/lenv_length.ma".
include "basic_2/relocation/lexs.ma".
-(* GENERAL ENTRYWISE EXTENSION OF CONTEXT-SENSITIVE REALTIONS FOR TERMS *****)
+(* GENERIC ENTRYWISE EXTENSION OF CONTEXT-SENSITIVE REALTIONS FOR TERMS *****)
-(* Forward lemmas on length for local environments **************************)
+(* Forward lemmas with length for local environments ************************)
(* Basic_2A1: includes: lpx_sn_fwd_length *)
lemma lexs_fwd_length: ∀RN,RP,L1,L2,f. L1 ⦻*[RN, RP, f] L2 → |L1| = |L2|.