gpsmap [-hviNIDVGMtbruapek] [-g config-file] [-o output-file]
[-f filter-list] [-F filter-type-list] [-z numthreads] [-S mapsource] [-c coords] [-s scale]
[-m usermap] [-d mapsize] [-n netcolors] [-O offset] [color-saturation] [map-intensity] [-R range-opacity] [feather-range] [-K bounds-opacity]
[-U hull-opacity] [-A scatter-opacity] [-B scatter-size] [feather-scatter]
[-Z draw-power-zoom]
[-P power-opacity] [-Q power-res] [-q power-colors] [-E center-opacity]
[-H center-size] [-l label-list] [-L label-orientation]
[-K legend-opacity] [-F feature-order]

GPSFile1 [GpsFile2 ... GpsFileN]