></TD><TD WIDTH="*" ALIGN=RIGHT VALIGN=BOTTOM><p><B>VERSION 4.5<br>
Thu 26 Aug 2010</B></td></tr></TABLE>
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<H3>Description</H3>
<p>
trjorder orders molecules according to the smallest distance
to atoms in a reference group
or on z-coordinate (with option <tt>-z</tt>).
With distance ordering, it will ask for a group of reference
atoms and a group of molecules. For each frame of the trajectory
the selected molecules will be reordered according to the shortest
distance between atom number <tt>-da</tt> in t