everything up to dollarfp is comment, this means dont use a dollarfp-sign
in your comment, everything which follows dollarfp must have this order:

date: dd.mm.yyyy time: hh.mm.ss.hsechsec

mass in kg which looses the sun per year (normally set to zero) if time
goes forward. These two numbers are expressed in power-of-ten
format i.e. 5.5e23. Insert here how much the sun looses due to your
theory of energy production. E.g. Fusion-Believers 12e16.
mass in kg which the sun wins  per year (normally set to zero) if time
goes forward. These two numbers are  expressed in power-of-ten
format i.e. 5.5e23. Insert here how much mass the sun wins due to
comets, meteors, asteroids.

if time goes backwards this field must be "Zeitzurck -1" else "Zeitvor 1"

the number of lines that follow even if there are "not"'s

now comes the data: 1.field 'plt' or 'not' or 'mon', not means: omitt this field

next comes the name of the planet/moon/sun

the next integer number must(!) be the number of the planet counted from
merkur = 1; this means e.g. that jupiter must(!) have always number 5, else you
get strange things happening in the mk-screen, moons  can be given
numbers above 10. The sun always has number 0.

the next three numbers are the x,y,z-coordinates of the planet at the given
time in e-notation in meters, so be shure to convert km to meter !

the next three numbers are the x,y,z-velocity(m/s).These numbers must be
given in e-notation.

the next number is the mass of the planet in e- notation

the next number is the mass in kg which you think must be added(or subtracted)
per year from the planet/sun. In the case of adding insert here (in kg) the
amount of mass the planet wins by meteorites/asteroids. In the case of subtracting
insert here the amount of mass which gets lost due to energy-production(sun)
conforming your theory of energy-production in the sun. If you want both values
to be respected, handcalculate them and insert that value. E.g. if you
think energy-production in the sun is due to atomic fusion insert here 12e16.

the next number is the radius of the planet. By now it is only used in asteroid/
meteorit - simulation and for collision-detection. Also e-notation.

the next number is rather dubious: in some stages of developping the program
it was felt that a formula-interpreter would be a nice feature. But since this
interpretion must be done in the most time-critical part of the program where
every fabs() or cast counts and which is highly optimized, the idea was given up.
As a rudimentary substitute (admittedly not the best idea)  this number and
the above massreduction/addition were introduced. Insert here the positive or
negative acceleration in m/s^2 in e-notation if you think there is a physical
law which dictates this and you know what you're doing. Better: leave this
field zero ! (if you got any better idea, contact me !)

the next integer is the color of the planet(do not omitt it !)
light colors:
15 = white  14 yellow 13 magenta 12 red 11 blue 10 green
9 blue 8 dark gray 7gray 6 brown 5 magenta 4 red 3 blue 2 green
1 dark blue
0 black/invisible
since the number of useful colors is limited, you can use the same color twice,
for inner planet and outer for instance

$fp  -g-32 -m-32

DISPLAY= VGAHI
DATE =1.1.1991
TIME= 12:11:10:09
;
;this is comment
MASSREDUCTION= 21.0e8
REDUCTIONLAW = sqr
ADDITIONLAW = log
GRAVITATIONALCONSTANT      = 6.67e-11
TIMEDIRECTION =-1
READ = 9
;data hier
;
;
plt Sonne 0 0.0 0.0 0.0 0.0 0.0 0.0 1.99e30 12e16 6.96e8 0e0 15
;plt merkur 1 -42.302338e9 38.898994e9 7.056235e9 32.13585796e3 34.94751196e3 0.0e3 3.3e23 0e0 2.5e6 0e0 14
plt merkur 1 -42.302338e9 38.898994e9 7.056235e9 32.13585796e3 34.94751196e3 0.0e3 3.3e25 0e0 2.5e6 0e0 14
plt venus 2 76.040313e9 -76.706802e9 6.416950e9 -24.79258804e3 -24.57717840e3 0e3 4.86e24 0e0 6.3e6 0e0 13
plt erde 3 -26.646047e9 147.207840e9 0.000000e9 29.30891218e3 5.30520052e3 0e3      5.975e24  0e0    6.378e6  0e0    12
plt mars 4 27.877123e9 226.062341e9 7.556065e9 23.94082657e3 -2.95228779e3 0e3 6.42e23 0e0 3.38e6 0e0 11
plt jupiter 5 -461.278629e9 627.495559e9 17.673433e9 10.51515984e3 7.73715651e3 0e3 19e26 0e0 71.7e6 0e0 10
;plt saturn 6 653.497029e9 -1272.660210e9 6.2462963e9 -8.32164325e3 -4.39117479e3 -0.2e3 5.67625e26 0e0 60.33e6 0e0 9
plt saturn 6 669.297029e9 -1293.360210e9 6.2462963e9 -8.34164325e3 -4.42117479e3 -0.2e3 5.67625e26 0e0 60.33e6 0e0 9
plt uranus 7 277.290833e9 -2973.939393e9 40.266928e9 -6.45384893e3 -0.53287125e3 0e3 8.7235e25 0e0 26.2e6 0e0 5
plt neptun 8 1107.143241e9 -4359.386937e9 141.348416e9 -5.24440217e3 -1.33190918e3 0e3 1.015e26 0e0 25.2e6 0e0 3
;plt mond 9 -26.646047e9 147.59224e9    0.0e0      30.30891218e3        5.3052e3        0.0e0   7.35e22   0.0e0  1.736e6  0.0e0  11