Example | |-- | |-- | |-- | |-- | |-- | | |-- | | | |-- | | | |-- | | | |-- | extension | |-- | | |-- | | | |-- | | | |-- | | | |-- | extension | |-- | | |--! | | | |-- | | | |-- | | | |-- | | | | |-- | |-- | |-- | |-- | |-- | | |-- | | | |-- | | | |-- | | |-- | | | |-- | | | |-- |-- | |-- | |-- | |--! | |-- | extension |-- | |-- | | |-- | | |-- | | |-- | extension Possibility to extend the XML schema with the templates or future extensions |