Release of Apple HyperCard (Mac)

Apple released HyperCard, created by Bill Atkinson, for the Macintosh. This 'software construction kit' introduced the concepts of cards, stacks, and buttons, inspiring Roger Wagner to create a similar tool for the IIGS.

Significance

HyperCard pioneered the user-friendly hypermedia concept, serving as a direct inspiration and conceptual predecessor for HyperStudio's design and functionality.