Commit 7dbf98f4 authored by Robbert Krebbers's avatar Robbert Krebbers
Browse files

Update comment in substitution.v.

parent 6d43651e
......@@ -2,8 +2,7 @@ From iris.heap_lang Require Export lang.
Import heap_lang.
(** The tactic [simpl_subst] performs substitutions in the goal. Its behavior
can be tuned using instances of the type class [Closed e], which can be used
to mark that expressions are closed, and should thus not be substituted into. *)
can be tuned by declaring [WExpr] and [WSubst] instances. *)
(** * Weakening *)
Class WExpr {X Y} (H : X `included` Y) (e : expr X) (er : expr Y) :=
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