 <tt>no    </tt> </TD><TD> Use the distance to the center of mass of the reference group </TD></TD>
<TR><TD ALIGN=RIGHT> <b><tt>-r</tt></b> </TD><TD ALIGN=RIGHT> real </TD><TD ALIGN=RIGHT> <tt>0     </tt> </TD><TD> Cutoff used for the distance calculation when computing the number of molecules in a shell around e.g. a protein </TD></TD>
<TR><TD ALIGN=RIGHT> <b><tt>-[no]z</tt></b> </TD><TD ALIGN=RIGHT> gmx_bool </TD><TD ALIGN=RIGHT> <tt>no    </tt> </TD><TD> Order molecules on z-coordinate </TD></TD>
</TABLE