Abstract:
Over the last decade there have been considerable advances in the
ways in which information can be stored, processed and delivered. Of
particular importance are the developments in computer storage
technologies and the various mechanisms by which people can interact
with computer systems. These developments enable large volumes of
information to be stored and displayed in 'electronic form'. Such
information can be organized in a linear fashion or it can be organized
into other, more sophisticated non-linear structures. Non-linear
arrangement of textual materials is called 'hypertext'. Similarly,
non-linear arrangement of multimedia information, a combination of
text, images and sound, is known as 'hypermedia' [1,2].
