SYSTAT is a general‐purpose statistics package originally developed by Leland Wilkinson and now owned and developed by Cranes Software International, Bangalore, India. Its distinguishing features are a terse scripting language, a simple graphical user interface, a small footprint, accurate algorithms, and a comprehensive statistical graphics engine. Over the last 20 years, SYSTAT has had implementations of CP/M, DOS, Windows, Unix, and Macintosh operating systems.
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Leland Wilkinson (2010) studied this question.