Mtrack is a X window based satellite tracking program. The
   program provides a window which contains a map along with the
   sub-satellite point and footprint, as well as the users home location.
   Information about the satellite is provided below the map. The program
   can also display a table showing future visibility, the visibilty at a
   large number of other locations, and updated keplerian elements. A
   full data
   editor is built in to allow for the addition, deletion and
   modification of the satelite data, location data and user preferences.
   The program can
   also import NASA two line elements directly. There is a choice of
   maps, and the colours of the map, footprint, satellite and user can
   all be
   changed.
   Author: Jonathan Naylor, HB9/G4KLX
   g4klx@g4klx.demon.co.uk