TODO.

TODO

@@ -5,14 +5,14 @@ TODO (REALLY):
 Relax ba so as to not require well-formedness?
   Define wf separately, relying on ba_wf internally.
 Global uniqueness, or uniqueness along a branch?
-  Which wf criterion do we want?
+  Which wf criterion do we want? both?
 
 Implement avoid, which renames the bound names of a term so as to
 avoid a certain set of names.
 
 Implement fused copy/subst, fused avoid/subst?
-  Implement a kit that composes two kits, so as to easily
-  implement fused operations.
+  Implement a kit that composes two kits, so as to easily implement fused operations.
+  Composition of classes? Or composition of kit objects? ...
 
 Suppose I want to annotate every abstraction with its fa.
 Or, suppose I want to annotate every abstraction with the