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6. Optional packages

This section gives an overview of the optional packages that extend LAMMPS functionality. Packages are groups of files that enable a specific set of features. For example, force fields for molecular systems or rigid-body constraints are in packages. You can see the list of all packages and “make” commands to manage them by typing “make package” from within the src directory of the LAMMPS distribution. The Build package page gives general info on how to install and un-install packages as part of the LAMMPS build process.