/** \mainpage OpenGeoSys ${OGS_VERSION} source code documentation
 *
 * OpenGeoSys (OGS) is a scientific open source project for the development of
 * numerical methods for the simulation of thermo-hydro-mechanical-chemical
 * (THMC) processes in porous and fractured media. OGS is implemented in C++, it
 * is object-oriented with an focus on the numerical solution of coupled multi-field
 * problems (multi-physics). Parallel versions of OGS are available relying on
 * both MPI and OpenMP concepts.
 *
 * Application areas of OGS are currently CO2
 * sequestration, geothermal energy, water resources management, hydrology and
 * waste deposition. OGS is comprised of the THMC-simulator (simply referred to as
 * *OGS*) and a visualization tool (*Data Explorer*).
 *
 * OGS is developed by the OpenGeoSys Community.
 *
 * \section source_documentation Source code documentation
 *
 * You will find the Doxygen documentation for the development branch at
 * https://doxygen.opengeosys.org.
 *
 * The documentation for OGS releases can be found here:
 *
 * - https://doxygen.opengeosys.org/v6.4.0
 * - https://doxygen.opengeosys.org/v6.3.3
 *
 * \section useful_links Useful links
 * - OGS home page: https://opengeosys.org/
 * - Selected benchmarks: https://opengeosys.org/docs/benchmarks
 * - Developer guide: https://opengeosys.org/docs/devguide
 * - Data Explorer (GUI) manual: https://gitlab.opengeosys.org/ogs/data_explorer_manual/-/jobs/artifacts/master/raw/ogsde-man.pdf?job=build
 * - Discussion forum: https://discourse.opengeosys.org
 *
 *
 * \section internal_modules Internal Modules
 *
 * * \subpage ODESolver
 * * \subpage ExternalODESolverInterface
 *
 */