[Model Aspect] member identity
a collection is a representation of members, and thus contains a list of entries representing each individual member. according to the atom model, each entry MUST have an http://tools.ietf.org/html/rfc4287#section-4.2.6, which is a URI but has no interaction semantics (specifically, best practice suggests that minting URIs that are not actionable might be a good idea http://web.archive.org/web/20110514113830/http://diveintomark.org/archives/ 2004/05/28/howto-atom-id). entries may have embedded content, or may link to the content they are representing (http://tools.ietf.org/html/rfc4287#section-4.1.3). identity is established by the entry , and this is particularly important in scenarios where collections may be aggregated and filtered and repurposed: entry identity must always be visible in the , and thus identity can be tracked across paths where entries may get repurposed in various collections.