Internal Subset only: a reference to an undeclared general entity

Note: entity inclusions are placed between a starting 'START--' and ending '--END'. That way you can see if an entity value has been properly resolved, or not.

Reference to internal general entity named test: START--&test;--END.

Reference to internal general entity named test2: START--&test2;--END. This second reference should lead to a fatal error, since this entity is not declared.