(* kernel version: basic, absolute, global *)
(* note : experimental *)
-type uri = Item.uri
-type id = Item.id
+type uri = Unit.uri
+type id = Unit.id
type bind = Void (* exclusion *)
| Abst of term (* abstraction *)
| Appl of term * term (* argument, function *)
| Bind of int * id * bind * term (* location, name, binder, scope *)
-type obj = bind Item.obj (* age, uri, binder *)
+type entry = bind Unit.entry (* age, uri, binder *)
-type item = bind Item.item
+type unit = bind Unit.unit
type lenv = (int * id * bind) list (* location, name, binder *)