diff options
Diffstat (limited to 'lib/builtin.ml')
| -rw-r--r-- | lib/builtin.ml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/builtin.ml b/lib/builtin.ml index 694b688..082471b 100644 --- a/lib/builtin.ml +++ b/lib/builtin.ml @@ -13,6 +13,7 @@ let upper_l = forced_label "upper" let names = [ "True"; + "World"; "Integer"; "Natural"; "Rational"; @@ -143,6 +144,9 @@ let between subst bindings = let run subst name bindings = match name with | "True" -> Some (yes subst) + (* The universe: true of every tuple, per the specification. Its + role is to scope denial, as in [World] :not [Adult person: P]. *) + | "World" -> Some (yes subst) | "Integer" -> Some (domain_check subst bindings (function |