$Id: History,v 1.18 2002/11/25 18:50:19 gum Exp $
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     Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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                      Category History file
                      ---------------------
This file should be used by G4 developers and category coordinators
to briefly summarize all major modifications introduced in the code
and keep track of all category-tags.
It DOES NOT substitute the  CVS log-message one should put at every
committal in the CVS repository !

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     * Reverse chronological order (last date on top), please *
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25 November 02: P. Gumplinger (xrays-V04-01-03)
- G4Scintillation now allows for particle dependent excitation levels

21 November 02: P. Gumplinger (xrays-V04-01-02)
- G4Scintillation now uses G4Poisson for small MeanNumPhotons in a step

14 November 02: P. Gumplinger (xrays-V04-01-01)
- G4Scintillation now uses the nearest integer to calculate the number of photons in DoIt

07 November 02: P. Gumplinger (xrays-V04-01-00)
- G4Scintillation now allows for fast and slow components. Scintillation properties are stored
  with the material and retrieved with GetConstProperty.

16 may 02: P. Gumplinger (xrays-V04-00-04)
- G4Scintillation now inherits from G4VRestDiscreteProcess changes made accordingly
  G4Scintillation/G4Cerenkov now only suspend the track when it is still 'fAlive'

09 may 02: P. Gumplinger (xrays-V04-00-03)
- changed method 'DoIt' in G4Scintillation so that origin of optical photons is
  the PostStepPoint location in case energy is lost to the medium by a neutral
  particle.

09 may 02: P. Gumplinger (xrays-V04-00-02)
- changed method 'IsApplicable' for G4Scintillation to return .false. when it 
  is called for an optical photon.

28 mar 02: G. Cosmo (xrays-V04-00-01)
- fixed endl/G4endl compilation problem in G4VXTRenergyLoss.cc ...

22 mar 02: V. Grichine (xrays-V04-00-00)
- new classes (G4VXTRenergyLoss,G4GammaXTRadiator and G4RegularXTRadiator) were
  added for the description of X-ray transition radiation as continuous process.
     
12 nov 01: mma (xrays-V03-02-02)
- merge of 00a and 01
  
24 oct 01: mma (xrays-V03-02-01)
- modified G4ForwardXrayTR.cc for cuts per material.
  Does NOT include mods in "xrays-V03-02-00a".

08 nov 01: R.Chytracek (xrays-V03-02-00a)
- modified G4Cerenkov.cc and G4Scintillator.cc for reference-counted
  touchables. Requires coworking tags in geometry category.

17 sep 01: mma (xrays-V03-02-00)
- modifs in almost all classes for the migration of Materials to pure STL,
  but backward compatible with g4rw   

12 Nov 00: pg  (xrays-V02-00-04)
- G4Cerenkov.cc: add check on CerenkovAngleIntegrals->IsFilledVectorExist()
-                in method GetAverageNumberOfPhotons
-                and a test for MeanNumPhotons <= 0.0 in DoIt

09 Nov 00: mma (xrays-V02-00-03)

04 oct 00: pg  (xrays-V02-00-02)
- G4Cerenkov.cc: calculate secondary position from aStep.GetDeltaPosition().
- G4Scintillation.cc: calculate secondary position from aStep.GetDeltaPosition().
     
11 aug 00: mma  (xrays-V02-00-01)

03 aug 00: gc  (xrays-V02-00-00r)
- G4Scintillation.cc: changed RandGauss to G4RandGauss for fixing
  events' reproducibility problem.
     
24 may 00: mma  (xrays-V01-01-02)  
     
27 apr 00 mma  (em-V01-01-01)
- G4endl (dec/iso)      
     
26 apr 00 mma  (em-V01-01-00)
- all EnergyLoss classes renamed G4V... 
  Most classes in standard and muons affected.
- G4Muls moved in utils
- bugs fixe in MuPairProduction  
- cowork with geant4-01-01-ref-02
     
02 mar 00 mma  (em-V01-00-00)
- new G4VEnergyLoss class and related structure
- cowork with geant4-01-00-ref-06
     
10 nov 99 mma  (em-V00-01-03)
- migration to STL: remove RWT hash dictionnary

14th June 1999  John Allison (em-01-00-05b)
- Muon corrections in G4MultipleScattering.cc, G4MuBremsstrahlung.cc
  and G4MuPairProduction.cc by Laszlo Urban, Pedro Arce.
  (Also in rocesses/photoleplon_hadron/src/G4MuNuclearInteraction.cc.)

5th June 1999  John Allison
- standard/GNUmakefile: Force non-optimised compliation of some
  files on HP with aCC: HP ANSI C++ B3910B A.01.15.

May 29, 1999: John Allison
- Added electromagnetic/lowenergy to GNUmakefile and
  electromagnetic/GNUmakefile..