This eight page article expands on the updated release of Zerhun by Columbia Games Inc., adding detail to "one of Hârn’s most impressive engineering achievements.”
The Harnic Astrology program takes a fully functional and richly detailed Earth-based Astrology Program ("SymSolon") (GNU) and changes the parameters to produce output appropriate for the Harnic Isles and the planet (solar system) of Kethira.