  The Information Flow Framework (IFF) is a descriptive category metatheory
currently under development, which is being offered as the structural aspect of
the Standard Upper Ontology (SUO). The architecture of the IFF is composed of
metalevels, namespaces and meta-ontologies. The main application of the IFF is
institutional: the notion of institutions and their morphisms are being
axiomatized in the upper metalevels of the IFF, and the lower metalevel of the
IFF has axiomatized various institutions in which semantic integration has a
natural expression as the colimit of theories.
