The program was released to the public in April 1993 on 3.5-inch floppy disk. It required considerably less than 1 MB of memory (as its files only occupied a few KB per page of music), and the combination of assembly language and the Archimedes' ARM processor meant that it ran very quickly. No matter how long the score, changes were displayed almost instantly. A unique feature of the Sibelius GUI at that time was the ability it gave the user to drag the entire score around with the mouse, offering a bird's eye of the score, as distinct from having to use the QWERTY input keyboard arrow keys, or equivalent, to scroll the page.