Install clhep-doc by entering the following commands in the terminal:
sudo apt update sudo apt install clhep-doc
Description:
Documentation of CLHEP
CLHEP provides a set of HEP-specific foundation and utility classes such as random generators, physics vectors, geometry and linear algebra. . This package provides HTML documentation of CLHEP.
Homepage: http://proj-clhep.web.cern.ch/proj-clhep/
Version: 2.1.4.1+dfsg-1
Section: universe/doc