File list (Check if you may need any files):
Euler Planetary Orbit
.....................\COLOUR.C
.....................\DEFINE.C
.....................\FONT.C
.....................\KEYBOARD.C
.....................\old
.....................\...\BUGS
.....................\...\CHANGES
.....................\...\CLEAR.C
.....................\...\COMPASS.C
.....................\...\CORRECT.C
.....................\...\CPU.C
.....................\...\DBLBFF
.....................\...\......\DBLBFF.C
.....................\...\......\KEYBOARD.C
.....................\...\Debug
.....................\...\.....\VC60.IDB
.....................\...\.....\VC60.PDB
.....................\...\DISPLACE.C
.....................\...\DOC
.....................\...\...\object integration
.....................\...\...\variable layout.xls
.....................\...\...\worldengin introduction.sxw
.....................\...\...\worldengin object reference rev2.sxw
.....................\...\FILE.C
.....................\...\function layout
.....................\...\GRID.C
.....................\...\LOAD.C
.....................\...\MAIN.BAT
.....................\...\PEARL
.....................\...\.....\PEARL.OBJ
.....................\...\PLOT.C
.....................\...\READOUT.C
.....................\...\ROTATE.C
.....................\...\SNIPPETS
.....................\...\........\ENGIN.C
.....................\...\........\FONT.C
.....................\...\........\GINIT.C
.....................\...\........\INIT.C
.....................\...\........\KEYBOARD.C
.....................\...\........\MAIN.C
.....................\...\........\MATH.C
.....................\...\........\PEARL.BAK
.....................\...\........\PEARL2
.....................\...\........\SCHEDULE.C
.....................\...\SPAWN.C
.....................\...\SPEED.C
.....................\...\TEST.BAK
.....................\...\TEST.C
.....................\...\UPDATE.C
.....................\...\VIDEO.C
.....................\...\WORLD.C
.....................\...\ZERO.C
.....................\sandbox.c
.....................\SINIT.C
.....................\STRUCT.C
.....................\walk.c