Context Setting
'Context setting' implies that the significance and inter-relatedness of individual dataitems be made explicit, and piece of information in the entire scheme of things is known. It is an important part of the transformation of mere data into usable information. This naturally means something beyond simple packaging and standardisation. The information must be expressed in the form which is most appropriate for the individual user, so that its significance can be clearly appreciated. Context setting, byits very nature, implies a particular context and a particular user need. The context setting aspect is most important for inter-disciplinary areas, where selection and presentation of material is also of great importance. Oceanographic Literature Review might be cited as an example of this type of information service. From this brief description of 'value-added' information services, it may be stated that value-added procedures provide high-quality form of information and value-added systems and services are generally most useful to users. Therefore, an increasein the availability of such services is to be welcomed. But, it must be stated that value-added options are expensive to provide and might lead to the emergence of high-cost information services which could be availed only by those who can afford the cost. This may lead to complex problems and deprive a large category of users from availing the benefits of such services.