RNBR version 0.10
     05 April 1998
     
     RNBR will calculate the distance (range) and compass angle (bearing)
     from one location on Earth to another.  Within the limits of rounding,
     and because the Earth is not a sphere, the distance may be in error
     by a few kilometers.  As of version 0.9, a different method of 
     calcuating distance from one point to another is implemented.
     The Haversine Formula is credited to R.W. Sinnott. Now at version
     0.10, some screen formatting problems and one calculation bug
     are fixed.
     
     The program also calculates the Maidenhead Grid Square for locations
     in the northern hemisphere and west of the zero meridian.  The actual
     range and bearings are more than adequate for beam headings.
     
     New for version 0.10
     When the mathematics of calculating the bearing involves an almost 
     divide by zero problem, at very short distances (range) the program 
     will not attempt to calculate the angle, and offer a default text
     string.
     
     CTRL-C will exit the program if something should go wrong. Remember
     that in AMOS Basic, you can switch between the AMOS screen and the
     normal Workbench screen with the CTRL-A key combination.
     
     Among those persons who may find this program useful are Amateur Radio 
     operators.  
     
     When first run, the program looks for the latitude and longitude of the
     Amateur Radio station from which the beam antenna will be pointed.
     It won't calculate anything until the local coordinates are entered,
     and when you save the coordinates, the file MYLOC.LONGLAT will be 
     written to the current directory.
     
     RNBR is an exercise in AMOS BASIC.  Future versions of the program
     should have some sort of graphic representation of the Earth, but
     this version (0.10) does not.
     
     The author of RNBR  Robert Davis K0FPC
                         bobdavis@cadvantage.com