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  Perfection...that's how we describe our DOS and we're sure you'll agree when
you put the SpartaDOS Construction Set to work.  It supports everything from
the 810 disk drive to hard disk drives,  RAMdisks with the Rambo XL modified
800XL or 1200XL, the 130XE, the modified 320K XE plus the Axlon 128 board for
the 800!  And there's more...

  A special menu file allows rapid transfer, erasure and lock or unlock of
tagged files, using only the Space Bar, Option, Start, and Select keys.  The
utility package also features a 32 character keyboard buffer, intelligent
switching between disk densities, a binary file game menu, subdirectories,
time/date file stamping, and a 175 page manual containing everything you ever
wanted to know about SpartaDOS and the US Doubler.