Hypertext, Transclusion and Redundancy

Transclusion means "freedom of redundancy". If a page is transcluded in several other pages, and it is updated, the updates propagate automatically to all includes in a synchronization transaction (hot update).

Ted Nelson defined transclusion as the central concept behind hypertext and hypermedia:
http://dl.acm.org/citation.cfm?id=208353

Transconsistency is a transclusion-related concept which allows for transformations of the page before it is embedded. Web systems are usually transclusive
http://www.sciencedirect.com/science/article/pii/S0167642304001789

Andreas Bartho's PhD on Elucidative Modeling employed transclusion and transconsistency for redundancy-reduced documentation. The technique generates parts of the documentation from models and code.