=head1 DESCRIPTION
=head1 ROLES
-
- Item |
- Undef |
- Defined |
- Scalar* <-|- String, Number <--+
- Ref | |-- Value
- Array* <-|- List <------------+
- Hash* |
- Code* |
-
+
+ +------------------------+-------------------------------+
+ | Identity | Behavioral |
+ +------------------------+-------------------------------+
+ | Item | |
+ | Undef | |
+ | Defined | |
+ | Scalar* <-|- String, Number <--+ |
+ | Ref | |-- Value |
+ | Array* <-|- List <------------+ |
+ | Hash* | |
+ | Code* | |
+ | | |
+ +------------------------+-------------------------------+
+
* indicates actual autoboxed types
=head1 NOTES