The Windows client program by Tim Wisseman ("VGA Planets 3.5"). It includes many features missing in the DOS version, such as a zoomable map, storms and minefields on the map, search, etc.
Winplan generates a special TRN file format, and HOST 3.20 answers with a special RST file format containing some information not in a standard "version 3.0" RST. A "Winplan-compatible" program usually is one which can understand these extended file formats.
