(topic learningBase+learningInteractionBase-d learningContent) A Learning Content topic provides the learning content itself, and enables direct use of content from DITA task, concept, and reference topics, as well as additional content of any topic type that supports specific objectives declared in the Learning Overview topic type. A Learning Content topic comprises a set of self-contained content about a single terminal learning objective supported by zero or more enabling learning objectives. The <learningContentbody> element is the main body-level element in a learningContent topic.