state scoping rules for Sub

Author: gfldex

doc/Type/Sub.pod6

@@ -36,6 +36,11 @@ coercers. To call them use the C<&>-sigil.
     say [Int, Int('42'),&Int('42')];
     # OUTPUT«[(Int) 42 oi‽]␤»
 
+Subs can be nested and scoped with C<my> and C<our>, whereby C<my> is the
+default. A sub declared with C<my> can not be reached from any outer scope. An
+C<our> scoped sub will not redefine a sub of the same name in the outer scope.
+Any sub can be accessed via a closure from any outer scope.
+
 =head1 Traits
 X<|trait_mod (declarator)>