Install ctsim-help by entering the following commands in the terminal:
sudo apt update sudo apt install ctsim-help
Description:
Online help file for CTSim
This package provides the online help file for the ctsim package. CTSim is a graphical computed tomography simulator. This help file is included in a separate package so it will not have to be include in the binary ctsim package for every architecture.
Homepage: http://www.ctsim.org
Version: 5.2.0-4
Section: universe/science