Defined Concepts can:
• be reused without explaining them again.
• be redefined by Planguage Users locally, and simultaneously Changing (hopefully improving) the definition of all terms, which reference the defined Concept.
• be referenced by a set of terms in any language, without necessarily having to rewrite the Concept definitions themselves in that language. For example the Concepts could be defined in English, but a Norwegian set of pointers to the Concepts can be quickly defined, to permit teaching or multinational project learning and use of specifications.