Index - N
| natCtx | Language.PTS.Examples | 
| natCtx' | Language.PTS.Examples | 
| natScript | Language.PTS.Examples | 
| natSucc | Language.PTS.Examples | 
| naturalsPrimScript | Language.PTS.Examples.Naturals | 
| NonEqual | Language.PTS.Error, Language.PTS | 
| NoRule | Language.PTS.Error, Language.PTS | 
| NotAFunction | Language.PTS.Error, Language.PTS | 
| NotAPair | Language.PTS.Error, Language.PTS |