When is Hypertext a Hyperpoem?
This question is up to the individual writer, but could probably be answered
in analogous ways to the question "when is prose poetry?"
To keep it simple: when a bunch of poems are linked together (or when a
bunch of texts are linked together 'creatively'), a Hyperpoem (HP) is formed.
The individual poems that make up the Hyperpoem are called 'Subpoems'.