Computer-based technologies are rapidly changing fundamental concepts about texts and how students interact with and learn from those texts. Early use of microcomputers included drill and practice work, tutorial programs, and word processing. In conjunction with information storage devices like magnetic and laser disc, the microcomputer has also brought about an enriched text for use in the classroom. Not only do students have access to vastly increased stores of information through which they may navigate, browse, or select, but text is dynamic with overlapping layers that increase the potential for obtaining meaning. One additional layer or dimension popular with young students is graphics added in book text. Where computers successfully go beyond book text is with the overlaying of animation and sound, while the harnessing of motion video results in interactive multimedia learning environments. (Eight figures containing computer graphics are included.) (KEH)