Document referring to an external DTD subset only.

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.

The external DTD subset declares two entities: 'test' (an internal entity with value: "Liam's Chowder House and Grill") and 'part' (an external entity with value: "External entity stuff.xml with markup inside of it.").

The internal DTD subset declares the same entities: 'test' (an internal entity with value: "Internal-subset defined value") and 'part' (an external entity - file foo.xml' with value: "Entity file foo.xml data content.").

Reference to internal entity test START--&test;--END

Reference to external entity part START--∂--END