Notes about the HWM file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The HWM file type is primarily associated with 'Hillwalker/MapWise/Alpiniste/PhotoMaps' by ISYS Computers. MapWise: For O.S Landranger and Explorer users to plan routes, route-cards, map-print, GPS download. Hillwalker: MapWise features with the addition of words, music, pictures and route guides. Alpiniste: A developing series aimed at the serious climber. Map Parameters to enable an Own Raster Map to be entered into the program without re-orientation.