Users rarely have an infinite time at their disposal. Having identified relevant information via the retrieval system, it is therefore crucially important for the location of the full text to be identified. For instance, sources such as Compendex*Plus for engineering literature abstracts or the Science Citation Index are widely available via the Bath Information and Data Services (BIDS) on JANET and can be accessed from the desktop PC to provide the subsequent stages of a literature search. The full text version may then have to be ordered from the British Library involving a delay of a few days. In the context of basic research this may not be a problem but
for certain users, for instance in the process control industry, this delay might be unacceptable.