better comment for kernel wrappers

diff --git a/helm/ocaml/cic_unification/cicMetaSubst.mli b/helm/ocaml/cic_unification/cicMetaSubst.mli
index 635825c7f34c696116a8bd23bb4451c74550de3f..5f29b9bdfc86cd060a2da19b919c3b8dacb3a515 100644 (file)
--- a/helm/ocaml/cic_unification/cicMetaSubst.mli
+++ b/helm/ocaml/cic_unification/cicMetaSubst.mli
@@ -65,13 +65,16 @@ val ppcontext: ?sep: string -> substitution -> Cic.context -> string
 val ppmetasenv: ?sep: string -> substitution -> Cic.metasenv -> string
 val ppsubst: substitution -> string
 
-(* From now on we recreate a kernel abstraction where substitutions are part of
+(* {2 Kernel wrappers}
+ * From now on we recreate a kernel abstraction where substitutions are part of
  * the calculus *)
 
 val whd: substitution -> Cic.context -> Cic.term -> Cic.term
+
 val are_convertible:
   substitution -> Cic.context -> Cic.term -> Cic.term ->
     bool
+
 val type_of_aux':
   Cic.metasenv -> substitution -> Cic.context -> Cic.term ->
     Cic.term