This is one of the many advantages of Hyperwave- objects are not found by looking in a certain location, they are found using unique identifiers which are completely independent of the actual location of the object. You may also change the name of a collection or give it multiple names, as long as each one is unique. Because collections have a delimiting function, they can be used to limit the scope of searches. Users can select a collection and search only in it and in its subcollections rather than searching the entire server. This helps users to retrieve only the information relevant to them.
Collections also aid in organizing access permissions.
It is possible to declare access rights for a certain part of the collection hierarchy, e.g. designating that only a certain group or user is allowed to view or modify it. However, there are some differences between collections and clusters. One main difference is that by default collections display a list of links to the objects in them when they are accessed, while clusters display some or all of the actual documents contained in them. Clusters have certain abilities to display documents according to user preferences. Language clusters implement Hyperwave's multilinguality, i.e. its ability to display the appropriate document according to the language the user prefers, if a document in that language is available.