Top level
/control/
/units/
/profiler/
/tracking/
/geometry/
/process/
/particle/
/event/
/cuts/
/run/
/random/
/dmx/
/material/
/vis/
/hits/
/gps/
/gui/
/geometry/
Geometry control commands.
Sub-directories
/geometry/navigator/
Geometry navigator control setup.
/geometry/test/
Geometry verification control setup.