- Template::TT3::Type::Code
- Template::TT3::Type::Hash - hash virtual object
- Template::TT3::Type::List - list virtual object
- Template::TT3::Type::Params - wafer thin subclass of Template::TT3::Type::Hash
- Template::TT3::Type::Source - object for representing template source code
- Template::TT3::Type::Text - object for representing and manipulating text
- Template::TT3::Type::Tree
- Template::TT3::Type::Undef - specialist type for the undefined value