WINDY is a planet in the Terris sector with the surprisingly uncommon trait of being named after one of its physical features.  A vast and permanent cyclone circles this world, with sustained winds sufficient to sweep an unprotected person off their feet.  Protection against this danger is provided by sturdily-constructed contiguous buildings which form an interconnected megalopolis.  Transport ships are occasionally able to land at one or the other side of this city as dictated by the position of the storm, and an internal tram system conducts people and goods with admirable efficiency.  Windies can and often do spend their entire lives without leaving the great city of their home.  There is just one complication caused by their culture, and that is the practice of wind dueling.  If any person feels that they have been insulted or mistreated by another, they may insist that both parties "step outside".  This may involve a lengthy journey to actually reach an external door nearest to the hurricane, and perhaps an apology or payment will settle the matter before exiting becomes necessary.  If it does, however, the duelists are not permitted to attack or even touch each other.  They may only jockey for position while attempting to remain standing, and perhaps shout their demands over the raging winds.  Fatalities are rare, but visitors are strongly cautioned to remain polite and not tempt the locals to engage in this custom.  It is certainly not a fun and safe activity as sometimes advertised by disreputable touts.