The Electronic Whole Earth Catalog is a CD-ROM version of the printed Whole Earth Catalogs which has been updated to early 1989. The main difference between the printed and the CD-ROM versions is that the CD-ROM contains a large number of digitized sound clips of the various records reviewed in the Catalog. The CD-ROM seems to contain the same illustrations as the printed version, albeit using the somewhat poorer resolution of scanned Macintosh screen images.
The Electronic Whole Earth Catalog is a hypertext with almost 10,000 nodes, first divided into domains. The main table on contents show 13 domains. These are subdivided into sections, which are then divided into clusters (sub-sections) which contain the actual articles. The Catalog has a five leveled hierarchy of main screen, domain, section, cluster, article.
The Catalog is a HyperCard stack which uses the HyperCard background feature and its built-in backtrack facility.