|FIGURE 1: THE FOUR GENERATIONS OF MEDIA|
In the first generation of speech, storage and transmission of information are both extragenetic; in the second generation of print, storage is extrasomatic; in the third generation of television, transmission is extrasomatic; in the fourth generation of hypermedia, to complete this typology, both storage and transmission are extrasomatic.
A hyperbook is created by organizing its content as a stack of cards, with buttons to link each card to related cards. This could be distributed as a floppy disc, which can be read by a computer loaded with the program in which it is written (let us say, for example, a Macintosh loaded with HyperCard). For those who do not have an appropriate computer and program to read this hyperdisc, the cards in the stack are simply printed out, spiral-bound along the top edge, and offered to the reader as a hyperbook. Instead of clicking icons to go instantly to related cards, the reader simply notes that there is related information on a certain card, and physically turns to this card.
Following are the major design features of a hyperbook which the author is currently creating (Gardiner, 1992):
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