Using graph-like structures to store and organise ideas, concepts, or even programs is not new. However, difficulties arise when large amounts of inter-related information are shared by groups of people. This paper describes an organisation based on perspectives that aids in structuring hypertext. Perspectives provide a uniform model for views, versions and contexts - and can be composed via perspective operations. After a brief introduction where we motivate the need for structuring mechanisms within hypertext, we give a more rigorous description of the model behind perspectives and the operations that can be performed on them. We then present a number of examples that demonstrate that perspectives can be used in various application domains. Finally, we outline a prototype implementation built to demonstrate the power and flexibilty of our model.