Find a manual

LAMMPS LAMMPS Installation
1

The software version I’m using is LAMMPS (16 Mar 2018). I hope I can find the corresponding version of the manual.
Thanks

2

The command I want to know about compute displace/atom in LAMMPS (16 Mar 2018).

3

Download the corresponding source code archive and the manual in PDF and HTML format is included.
https://download.lammps.org/tars/index.html