Users of the digital library will have a huge variety of computers, connected over widely differing communications channels, operating in different social and legal frameworks. The digital library must adapt to these mixed environments, providing suitable services with good performance. The social aspects of digital libraries are some of the most difficult. The problem in human-computer interaction lies in the structuring of information sources and services. Users must not be obliged to serve a long apprenticeship before they can make effective use of the digital library.
Rights management is a key part of control.
Rights in intellectual property must be identified and tracked. Rights management can be linked with questions of payment. E. Areas Not Recommended for Research. The list of research topics in Section D is long, but many important topics have been omitted. Some important areas can be left to normal developments.