improper_zero.html
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	<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
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	<H3>improper_style zero command
	</H3>
	<P><B>Syntax:</B>
	</P>
	<PRE>improper_style zero
	</PRE>
	<P><B>Examples:</B>
	</P>
	<PRE>improper_style zero
	improper_coeff *
	</PRE>
	<P><B>Description:</B>
	</P>
	<P>Using an improper style of zero means improper forces and energies are
	not computed, but the geometry of improper quadruplets is still
	accessible to other commands.
	</P>
	<P>As an example, the <A HREF = "compute_improper_local.html">compute
	improper/local</A> command can be used to
	compute the chi values for the list of quadruplets of improper atoms
	listed in the data file read by the <A HREF = "read_data.html">read_data</A>
	command. If no improper style is defined, this command cannot be
	used.
	</P>
	<P>Note that the <A HREF = "improper_coeff.html">improper_coeff</A> command must be
	used for all improper types, though no additional values are
	specified.
	</P>
	<P><B>Restrictions:</B> none
	</P>
	<P><B>Related commands:</B> none
	</P>
	<P><A HREF = "improper_none.html">improper_style none</A>
	</P>
	<P><B>Default:</B> none
	</P>
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