Install geant321-doc by entering the following commands in the terminal:
sudo apt update sudo apt install geant321-doc
Description:
[Physics] Documentation for GEANT 3.21
GEANT is a framework for simulating the passage of subatomic particles through matter, for instance, particle detectors. For maximum flexibility, GEANT simulations are performed by linking FORTRAN code supplied by the user with the GEANT library, then running the resulting executable. . This package includes some documentation in text format about GEANT 3.21.
Homepage: http://wwwasd.web.cern.ch/wwwasd/geant/index.html
Version: 1:3.21.14.dfsg-11build1
Section: universe/doc