Here is a list of all files with brief descriptions:

[detail level 123]

examples
gsystem_example.cc	Minimal example : construct a world from command-line options
gsystemFactories
cad
loadGeometry.cc	Geometry loading implementation for GSystemCADFactory
loadMaterials.cc	Materials loading stub for GSystemCADFactory
loadMirrors.cc	Mirrors loading implementation for GSystemCADFactory
systemCadFactory.cc	Translation unit for the CAD system factory
systemCadFactory.h
gdml
loadGeometry.cc	Geometry loading stub for GSystemGDMLFactory
loadMaterials.cc	Materials loading stub for GSystemGDMLFactory
systemGdmlFactory.cc	Translation unit for the GDML system factory
systemGdmlFactory.h
sqlite
loadGeometry.cc	Geometry loading implementation for GSystemSQLiteFactory
loadMaterials.cc	Materials loading implementation for GSystemSQLiteFactory
loadMirrors.cc	Mirrors loading implementation for GSystemSQLiteFactory
systemSqliteFactory.cc	Sqlite-backed implementation utilities for GSystemSQLiteFactory
systemSqliteFactory.h
text
loadGeometry.cc	Geometry loading implementation for GSystemTextFactory
loadMaterials.cc	Materials loading implementation for GSystemTextFactory
loadMirrors.cc	Mirrors loading implementation for GSystemTextFactory
systemTextFactory.cc	ASCII text file helper implementation for GSystemTextFactory
systemTextFactory.h
systemDynamicFactory.h
systemFactory.h
gmaterial.cc	Implementation of GMaterial
gmaterial.h
gmirror.cc	Implementation of GMirror
gmirror.h
gmodifier.h
gsystem.cc	Implementation of GSystem
gsystem.h
gsystem_options.cc	Implementation of gsystem option helpers
gsystem_options.h	Option definitions and extraction helpers for the gsystem module
gsystemConventions.h	Conventions and shared constants for the detector-system module
gsystemDoxy.h
gvolume.cc	Implementation of GVolume
gvolume.h
gworld.cc
gworld.h