# ReaxFF file reader

For loading interatomic bonds and their properties from text files written by the LAMMPS fix reaxff/bonds command or the original standalone ReaxFF code of Adri van Duin.

This file reader is typically used in conjunction with a Load trajectory modifier to add a varying list of bonds from a reactive MD simulation to a particle model.

In addition to the time-dependent bond connectivity, the ReaxFF reader loads the particle properties `Charge`, `Atom Bond Order`, and `Lone Pairs` from the selected file and attaches them to the existing atomic model. Furthermore, the property `Bond Order` is assigned to the bonds as a new bond attribute.

This reader can load gzipped files (“.gz” suffix) and zstd compressed files (“.zst” suffix).