Starlab version 4.4.1
    program created on Apr 27 2005 at 23:01:29
    source file     /home/steve/starlab/src/node/dyn/tdyn/worldlines.C

   worldlines:  Create output snapshots from input worldbundles.
                Produce a snapshot or diagnostic starting at time t,
                optionally with time step dt.

   options:     -d    output interval (negative integer ==> 2^[-d])   [0]
                -D    diagnostic: no snapshsot                       [no]
                -F    specify input file                          [stdin]
                      *** file input is much faster (why?) ***
                -t    initial output time                 [start of data]
                -v    verbosity level                                 [1]

   Snapshots are generated as soon as the data are available
   -- i.e. we don't read in the entire dataset first.
   Only one snapshot is produced if the time step is 0 (default).

   Note: Output is in pdyn format, which currently cannot be used
   directly as input to kira.

   Created by  SPZ at MIT in Dec 2000
   Modified by SLWM at DU in Dec 2003