Hierarchy of keywords and geometry tree

  Valid keywords to define the geometry (see GEOM data card description) and their hierarchy are defined through the title block ``SETU''. The currently used version is shown below:

 level=0       1       2       3
    CMSE -> TRAK -> PXLX -> PBXL  (Barrel Pixel)   
                         -> PFXL  (Forward Pixel)  
                 -> SVTX -> TSBX  (Barrel Silicon) 
                         -> TSFX  (Forward Silicon)
                 -> MSGC -> TGBX  (Barrel MSGC In) 
                         -> TGBY  (Barrel MSGC Out)
                         -> TGFX  (Forward MSGC)   
         -> MUON -> MB   -> MDBX  (DTBX)           
                         -> MRBX  (Barrel RPC)
                 -> MF   -> MCFX  (CSC)
                         -> MRFX  (Forward RPC)
         -> CALO -> ECAL -> ECBX  (Crystal Barrel)
                         -> ECFX  (Crystal Forward)
                         -> ESBX  (Preshower Barrel)
                         -> ESFX  (Preshower Forward)
                 -> HCAL -> HCBX  (Barrel)
                         -> HCFX  (Forward)
                         -> HTBX  (Tail Catcher)
                 -> VCAL
         -> CMSC                  (Scan hits)
         -> TRIG -> CTRI          (Calorimetric Trigger)
                 -> MTRI -> RPCT  (RPC  Trigger)
                         -> DTBT  (DTBX Trigger)
                         -> CSCT  (CSC  Trigger)
                         -> TIPT
                 -> TTRI 
                 -> GTRI          (Global Trigger)
         -> OCMS -> OQUA          (Quadrupole)
                 -> OSTR          (Outer Structure)
         -> BEAM                  (Beam pipe)