(* PATH *********************************************************************)
-(* Policy: path step metavariables: c *)
+(* Policy: path step metavariables: o *)
(* Note: this is a step of a path in the tree representation of a term:
rc (rectus) : proceed on the argument of an abstraction
sn (sinister): proceed on the left argument of an application
| dx: step
.
-definition is_dx: predicate step ≝ λc. dx = c.
+definition is_dx: predicate step ≝ λo. dx = o.
(* Policy: path metavariables: p, q *)
(* Note: this is a path in the tree representation of a term, heading to a redex *)