The document discusses modeling the history of collections and transmission of texts. It explains that CIDOC CRM is event-centric and models concepts like acquisitions, transfers of custody, and moves. FRBRoo combines CIDOC CRM's event modeling with FRBR's vocabulary for modeling the creation and transmission of works from their conception to various expressions and manifestations. The combination of CIDOC CRM and FRBRoo provides the necessary concepts and relationships to fully represent the histories being modeled.