type 'ident intros_spec = int option * 'ident option list
-type 'term auto_params = 'term list * (string*string) list
+type 'term auto_params = 'term list option * (string*string) list
type 'term just =
[ `Term of 'term
| NGeneralize of loc * npattern
| NId of loc
| NIntro of loc * string
+ | NInversion of loc * CicNotationPt.term * npattern
| NLApply of loc * CicNotationPt.term
| NLetIn of loc * npattern * CicNotationPt.term * string
| NReduce of loc * [ `Normalize of bool | `Whd of bool ] * npattern