Client Zone allows you to incorporate Web pages and files that should not be accessible to ordinary visitors. It is used eg. For protected access to price lists and other documents. Approaches to client zone based web administrator and has the ability to set multiple levels of authorization.
Shared blocks is a component that allows you to repeatedly insert a set of components. It works simply. You can choose any components and create their own set of components. There then insert into the content as a separate component.