Starlab version 4.4.1 program created on Apr 27 2005 at 22:53:24 source file /home/steve/starlab/src/node/dyn/util/reflect_velocities.C Multiply all velocity components by -1, thereby effectively reversing the direction of time in the input N-body system(s). Usage: reflect_velocities [OPTIONS] < input > output Options: -c add a comment to the output snapshot [false] Written by Piet Hut. Reports bugs to starlab (at) sns.ias.edu.