Extensions is a series of RSXs to bring more BASIC 1.1 support for a 464, so more parameters for the Graphical commands, Clear Input, Copychr$, though it also supports loading and saving of Headerless Files. The program only works on an unexpanded 464 (the Library resides where AMSDOS sits in memory) & Memory Full results if AMSDOS is present due to the address sitting above HIMEM.