The Final Cartridge III which consists of 64 Kbytes in machine-code, offers many additional features apart from the DESKTOP, for example:

• Many useful toolkit commands.
• Easy to use disk commands.
• 24K bytes extra memory in BASIC.
• A tape turbo which loads and saves TEN TIMES faster.
• A disk turbo which loads FIFTEEN TIMES faster, and saves SEVEN TIMES faster.
• A built-in machine language monitor.
• A disk monitor.
• A Centronics printer interface to produce listings and high-resolution graphic screen dumps.
• A bullt-in sprite killer.
• A reset switch, which will enable you to regain control of your computer at any time, and an OLD command, which restores your BASIC program back
  after a reset or NEW.
• A freezer facility which:

1. will dump programs to tape or disk.
2. allows you to pause a program.
3. allows you to make screendumps, including even sprites.

• A built-in Notepad, enabling you to keep notes or create short documents.

The user interface, the windows and pull-down menus are based on ideas applied in the Apple Macintosh and the Commodore Amiga.