improper_zero.txt
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improper_zero.txt
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			"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

			:link(lws,http://lammps.sandia.gov)
			:link(ld,Manual.html)
			:link(lc,Section_commands.html#comm)

			:line

			improper_style zero command :h3

			[Syntax:]

			improper_style zero {nocoeff} :pre

			[Examples:]

			improper_style zero
			improper_style zero nocoeff
			improper_coeff * :pre

			[Description:]

			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.

			As an example, the "compute
			improper/local"_compute_improper_local.html 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 "read_data"_read_data.html
			command. If no improper style is defined, this command cannot be
			used.

			The optional {nocoeff} flag allows to read data files with a ImproperCoeff
			section for any improper style. Similarly, any improper_coeff commands
			will only be checked for the improper type number and the rest ignored.

			Note that the "improper_coeff"_improper_coeff.html command must be
			used for all improper types, though no additional values are
			specified.

			[Restrictions:] none

			[Related commands:] none

			"improper_style none"_improper_none.html

			[Default:] none