Roles of signals and boundaries -- Theory and models: general principles -- Agents and signal processing -- Networks and flows -- Adaptation -- Recombination and reproduction -- Urn models of boundaries -- Boundary hierarchies -- The evolution of niches, a first look -- Language: grammars and niches -- Grammars as finitely generated systems -- An overarching signal/boundary framework -- A dynamic generated system model of ontogeny -- A complete dynamic generated system for signal/boundary studies -- Mathematical models of generated structures -- A short version of the whole
