[tdwg-content] examples or further reading on ac:subtypeLiteral?

Hi, I am looking for more info or examples on the subtypeLiterals listed here: http://terms.tdwg.org/wiki/AC_Subtype_Examples Some of these are more obvious than others: Drawing, Painting, Logo, Icon, Illustration, Graphic, Photograph, Animation, Film, SlideShow, DesignPlan, Diagram, Map, MusicalNotation, IdentificationKey, ScannedText, RecordedText, RecordedOrganism, TaxonPage, MultimediaLearningObject, VirtualRealityEnvironment, GlossaryPage Thanks, - Dan Stoner