val saturate_term:
int -> Cic.metasenv -> Cic.context -> Cic.term ->
Cic.term * Cic.metasenv * Cic.term list * int
+
+(* returns the index and the type of a premise in a context *)
+val lookup_type: Cic.metasenv -> Cic.context -> string -> int * Cic.term
+