Top level interactions elements provide the primary question types available in the
learning interactions domains.
Note: DITA 1.3 defines two new domains for describing
learning and training interactions: learningInteractionBase2Domain and learning2Domain.
These two new domains mirror the DITA 1.2 learningInteractionBase and general learning
domains, but the new versions provide support for multi-paragraph questions, answers, and
feedback. The new domains are otherwise semantically identical to the original domains. For
backwards compatibility, both interactions domains are supported in DITA 1.3. For new
content, use the DITA 1.3 learning2Domain elements.