small tweaks
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@ -314,23 +314,25 @@ there is no information about the number of types or the box dimensions.
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These parameters are set when the simulation box is created. Thus the
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header only has the count of atoms, bonds, and so on.
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Molecule files have a header followed by sections, but the section names
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are different than those of a data file. There is no "Atoms" section
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and the section format is independent of the atom style. Its
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information is split across multiple sections, like "Coords", "Types",
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and "Charges". Note that no "Masses" section is needed here. The atom
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masses are by default tied to the atom type and set with a data file or
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the :doc:`mass command <mass>`. A "Masses" section would only be
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required for atom styles with per-atom masses, e.g. atom style sphere.
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Molecule files have a header followed by sections (just as in data
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files), but the section names are different than those of a data file.
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There is no "Atoms" section and the section formats in molecule files is
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independent of the atom style. Its information is split across multiple
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sections, like "Coords", "Types", and "Charges". Note that no "Masses"
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section is needed here. The atom masses are by default tied to the atom
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type and set with a data file or the :doc:`mass command <mass>`. A
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"Masses" section would only be required for atom styles with per-atom
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masses, e.g. atom style sphere, where in data files you would provide
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the density and the diameter instead of the mass.
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Since the entire file is a 'molecule', LAMMPS will assign a new
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molecule-ID (if supported by the atom style) when atoms are instantiated
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from a molecule file, e.g. with the :doc:`create_atoms command
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<create_atoms>`. It is possible to include a "Molecules" section in
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case the atoms belong to multiple 'molecules'. Atom-IDs and
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molecule-IDs in the molecule file are relative for the file (starting
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from 1) and will be translated into actual atom-IDs also when the
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molecule is created.
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<create_atoms>`. It is possible to include a "Molecules" section to
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indicate that the atoms belong to multiple 'molecules'. Atom-IDs and
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molecule-IDs in the molecule file are relative for the file
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(i.e. starting from 1) and will be translated into actual atom-IDs also
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when the atoms from the molecule are created.
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.. code-block:: bash
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@ -407,7 +409,6 @@ are in the ``lmprestart.h`` header file.
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LAMMPS restart files are not expected to be portable between platforms
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or LAMMPS versions, but changes to the file format are rare.
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.. Native Dump file
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.. ^^^^^^^^^^^^^^^^
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..
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