A program to animate up to 6 planetary masses, all of which exert a mutual
gravitational force on each other.  The planetary masses can be placed
anywhere on the screen, and their mass and initial velocity can be
determined by the user.  The program then steps the animation through time,
plotting and displaying the new position in the trajectory of each mass.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  296     974  30.4% -lh5- 6156 Jun 25  1989 GravSim.info
[generic]                   40      40 100.0% -lh0- 70a8 Jun 25  1989 GravSim/.info
[generic]                  342     668  51.2% -lh5- a34a Jun 25  1989 GravSim/CONTENTS
[generic]                  131     334  39.2% -lh5- c350 Jun 25  1989 GravSim/Ex1.Gsim
[generic]                  109     320  34.1% -lh5- 36b5 Jun 25  1989 GravSim/Ex2.Gsim
[generic]                11193   23200  48.2% -lh5- 89f3 Jun 25  1989 GravSim/GravitySimulator
[generic]                 1181    3785  31.2% -lh5- fe42 Jun 25  1989 GravSim/GravitySimulator.info
[generic]                11442   41451  27.6% -lh5- a3c0 Jun 25  1989 GravSim/GravSim.c
[generic]                 1758   10739  16.4% -lh5- cbe8 Jun 25  1989 GravSim/GravSim.h
[generic]                 1159    2342  49.5% -lh5- 36e9 Jun 25  1989 GravSim/GSim.pw
[generic]                  113     179  63.1% -lh5- e89f Jun 25  1989 GravSim/makefile
[generic]                 2561    6122  41.8% -lh5- fabe Jun 25  1989 GravSim/README
[generic]                  137     176  77.8% -lh5- 9936 Jun 25  1989 GravSim/README.fnf
[generic]                  440    2566  17.1% -lh5- 3906 Jun 25  1989 GravSim/README.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        14 files   30902   92896  33.3%            Jun 25  1989