+ | NIntro of loc * string
+ | NIntros of loc * string list
+ | 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
+ | NRewrite of loc * direction * CicNotationPt.term * npattern
+ | NAuto of loc * CicNotationPt.term auto_params
+ | NDot of loc
+ | NSemicolon of loc
+ | NBranch of loc
+ | NShift of loc
+ | NPos of loc * int list
+ | NPosbyname of loc * string
+ | NWildcard of loc
+ | NMerge of loc
+ | NSkip of loc
+ | NFocus of loc * int list
+ | NUnfocus of loc
+ | NTry of loc * ntactic
+ | NAssumption of loc
+ | NRepeat of loc * ntactic
+ | NBlock of loc * ntactic list