+(* bool = true if the type of the new meta is closed *)
+val mk_meta:
+ ?attrs:NCic.meta_attrs ->
+ NCic.metasenv -> NCic.context ->
+ ?with_type:NCic.term -> NCicUntrusted.meta_kind ->
+ NCic.metasenv * int * NCic.term * NCic.term (* menv,metano,instance,type *)
+
+(* extend_meta m n: n must be in m *)
+val extend_meta: NCic.metasenv -> int -> NCic.metasenv * NCic.term
+
+(* returns the resulting type, the metasenv and the arguments *)
+val saturate:
+ ?delta:int -> NCic.metasenv -> NCic.substitution ->
+ NCic.context -> NCic.term -> int ->
+ NCic.term * NCic.metasenv * NCic.term list
+
+val is_out_scope_tag : NCic.meta_attrs -> bool
+val int_of_out_scope_tag : NCic.meta_attrs -> int