+ [ { "pointwise union for local environments" * } {
+ [ "llor ( ? ⋓[?,?] ? ≡ ? )" "llor_alt" + "llor_drop" * ]
+ }
+ ]
+ [ { "lazy pointwise extension of a relation" * } {
+ [ "llpx_sn" "llpx_sn_alt" + "llpx_sn_alt_rec" + "llpx_sn_tc" + "llpx_sn_lreq" + "llpx_sn_drop" + "llpx_sn_lpx_sn" + "llpx_sn_frees" + "llpx_sn_llor" * ]
+ }
+ ]
+ [ { "global env. slicing" * } {
+ [ "gget ( ⬇[?] ? ≡ ? )" "gget_gget" * ]
+ }
+ ]
+ [ { "context-sensitive ordinary rt-substitution" * } {
+ [ "cpy ( ⦃?,?⦄ ⊢ ? ▶[?,?] ? )" "cpy_lift" + "cpy_nlift" + "cpy_cpy" * ]
+ }
+ ]
+ [ { "local env. ref. for rt-substitution" * } {
+ [ "lsuby ( ? ⊆[?,?] ? )" "lsuby_lsuby" * ]
+ }
+ ]
+ [ { "pointwise extension of a relation" * } {
+ [ "lpx_sn" "lpx_sn_alt" + "lpx_sn_tc" + "lpx_sn_drop" + "lpx_sn_lpx_sn" * ]
+ }
+ ]
+ [ "cpx_lreq" + "cpr_cir" + "fpb_lift" + "fpbq_lift" ]
+ [ "lleq ( ? ≡[?,?] ? )" "lleq_alt" + "lleq_alt_rec" + "lleq_lreq" + "lleq_drop" + "lleq_fqus" + "lleq_llor" + "lleq_lleq" * ]
+*)