The reference either contains or otherwise bookmarks all inert information surrounding the project. That is, there are no action items to be found in the reference except those intended to keep its contents up to date. An essential component of the reference is the lexicon, which houses definitions for all terms of art associated with the project. Connect existing Create new Has Narrower Narrow Match Has Related Close Match Exact Match Has Broader Broad Match Has Narrower Narrow Match Has Related Close Match Exact Match Has Broader Broad Match activity (statement) affordance architect (Cooper) client (process model) cognitive science composition (process model) computation computer conceptual integrity constraint customer (process model) design digital media engineer (Cooper) extension feed fitness variable form information ecology intension interaction design linguistics live document mathematics name collision opacity (information resource) persona post-industrial post-industrial process model problem-solving process producer programmer (Cooper) project scaffold protocol dysphoria reference catalogue scenario science semiotics social science software technology user