Topicmaps.net’s Processing Model for XTM 1.0 defines a set of rules for processing topic map documents in order to reconstitute the meaning of the information they are intended to convey to their recipients. It could be used as a partial blueprint for a topic maps application, but that is not its primary purpose. Its primary purpose is merely to illustrate, in a rigorous fashion, the authors’ deepest understanding of the meaning of topic map information.