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   4 <h2>trj file format</h2>
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   8 <TD ALIGN=RIGHT><B>VERSION 4.6</B></TR>
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  10 <TD ALIGN=RIGHT><B>Sat 19 Jan 2013</B></TR></TABLE></CENTER><HR>
  11 <h3>Description</h3>
  12 Files with the trj file extension contain the trajectory of a simulation.
  13 In this file all the coordinates, velocities, forces and energies are
  14 printed as you told GROMACS in your mdp file. This file is in binary
  15 format an can be read with <a href=gmxdump.html>gmxdump</a>.
  16 <PRE>
  17 % <a href="gmxdump.html">gmxdump</a> -f traj.trj
  18 </PRE>
  19 or if you're not such a fast reader:
  20 <PRE>
  21 % gmxdump -f traj.trj | more
  22 </PRE>
  23
  24 <p>
  25 You can also get a quick look in the contents of the file (number of
  26 frames etc.) using:
  27 <PRE>
  28 % <a href="gmxcheck.html">gmxcheck</a> -f traj.trj
  29 </PRE>
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