RA-DIO is a seminal hypertext created by Italian artist Lorenzo Miglioli. Designed for Macintosh computer and the Storyspace platform and later extended to PCs running the Windows operating system, it was distributed on two 3.5-inch floppy disks, along with the book of the same name, in a plastic sleeve. The book and electronic media constituted a joint venture between Castelvecchi Editore and Human Systems as part of its experimental series, "Elettrolibri." The former was an established publisher that had the rights for RA-DIO. While Miglioli's hypertext is published on the two disks, it also appears in the the book as a print out. The project was wildly popular with the available copies selling out before more could be printed. The version used for this exhibition came on a floppy disk designated for the Macintosh computer but was only accessible on a PC. The second disk is formatted for MS-DOS.