$Id: History,v 2.5 1998/11/25 16:26:53 allison 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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History file for visualization/modeling
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vis-00-04-01  25th November 1998  John Allison.
- Added const G4VisAttributes* fpDefaultVisAttributes and access
  functions to G4ModelingParameters.
- Reverted to default assignment operator and copy constructor for
  G4ModelingParameters.
- G4PhysicalVolumeModel can now handle invisible daughters.

31st August 1998  John Allison
- Added G4VModel::Validate() and in subclasses.

vis-00-02-05  27th August 1998  John Allison
- Added G4HitsModel and G4TrajectoriesModel.

vis-00-02-04  22nd August 1998  John Allison
- Made G4Transform3D fTransform a member of G4VModel (instead of pointer).
- Reversed order of parameters in G4VModel constructor.
- Much bug fixing.

vis-00-06-06  11th June 1998  John Allison
- G4PhysicalVolumeModel handles parametrised solids and materials.

vis-00-06-04  10th June 1998  John Allison
- Moved G4BoundingSphereScene from management to modeling.
- Added G4Transform3D data member.

modeling-00-04-01  4th March 1998  John Allison
- Last tag before moving to visualization.
- Removed G4ModelingParameters:: from G4ModelingParameters.hh constructor.

27th January 1998  John Allison
- New (temporay?) category.
- Incorporates modeling code which was in G4VScene.