Added to Chapter 2 “Requirements, Section 2.2 “Asset Curation Requirements”:Added to Chapter 2 “Requirements, Section 2.2 “Asset Curation Requirements”:  “Modules are used to organize content for maintenance and publication purposes. Modules are the domain or organizational name of the larger asset within which the component is meaningful, such as code system or edition. Modularity for terminologies should follow a similar design to modularity in software engineering. Deciding what belongs in certain modules or extensions within certain terminologies is a difficult subject that is out of scope for this document, but having support for the ability to create modules, recognize redundancy, and merge or retire concepts are important requirements that must be supported.”