diff --git a/gl/inc/TArcBall.h b/gl/inc/TArcBall.h
index bbb91b9871633b8fd2d6a5bc445c9646df8be9d2..9e163c839e9f74cf8553f31dadce4699d1c62664 100644
--- a/gl/inc/TArcBall.h
+++ b/gl/inc/TArcBall.h
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TArcBall.h,v 1.5 2004/09/14 15:37:34 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TArcBall.h,v 1.6 2004/09/17 19:33:31 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -49,6 +49,7 @@ public:
    {
       return fTransform;
    }
+   ClassDef(TArcBall,0)
 };
 
 class TEqRow {
diff --git a/gl/inc/TGLCamera.h b/gl/inc/TGLCamera.h
index 0cb10528438d8c2eebb5df6076f0089b7fe83971..f0e4f63b96ab18ae0af5f9f9400a754478b2c51d 100644
--- a/gl/inc/TGLCamera.h
+++ b/gl/inc/TGLCamera.h
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLCamera.h,v 1.3 2004/09/14 15:37:34 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLCamera.h,v 1.4 2004/11/15 14:59:02 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -43,6 +43,8 @@ public:
 private:
    TGLCamera(const TGLCamera &);
    TGLCamera & operator = (const TGLCamera &);
+   
+   ClassDef(TGLCamera,0)
 };
 
 class TGLTransformation {
diff --git a/gl/inc/TGLKernel.h b/gl/inc/TGLKernel.h
index 06631b84978d117a96ce0d11b115036ef3ac3fa9..d27ff54e0a6bbd8d5ef6bfcdf0e9c6f5f848bd59 100644
--- a/gl/inc/TGLKernel.h
+++ b/gl/inc/TGLKernel.h
@@ -1,4 +1,4 @@
-// @(#)root/base:$Name:  $:$Id: TGLKernel.h,v 1.14 2004/09/13 09:56:33 brun Exp $
+// @(#)root/base:$Name:  $:$Id: TGLKernel.h,v 1.15 2004/09/29 06:55:13 brun Exp $
 // Author: Valery Fine(fine@vxcern.cern.ch)   05/03/97
 
 /*************************************************************************
@@ -145,6 +145,8 @@ public:
 
 private:
    void DrawStars(const Double_t * vertex, Style_t marker_style, UInt_t size);
+
+   ClassDef(TGLKernel,0) //Concrete GL interface on top of TVirtualGL
 };
 
 #endif
diff --git a/gl/inc/TGLRender.h b/gl/inc/TGLRender.h
index c7bdc532e94498106ab3b397b4cee71fb646b0a6..4fda8c3ddf7c208d442f929629e43e954f2ceda4 100644
--- a/gl/inc/TGLRender.h
+++ b/gl/inc/TGLRender.h
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLRender.h,v 1.8 2004/11/22 23:38:31 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLRender.h,v 1.9 2004/11/23 14:00:29 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -49,7 +49,7 @@ private:
 
 public:
    TGLRender();
-   ~TGLRender();
+   virtual ~TGLRender();
    void Traverse();
    void SetAllActive()
    {
@@ -89,6 +89,8 @@ private:
 
    TGLRender(const TGLRender &);
    TGLRender & operator = (const TGLRender &);
+   
+   ClassDef(TGLRender,0)
 };
 
 #endif
diff --git a/gl/inc/TGLSceneObject.h b/gl/inc/TGLSceneObject.h
index 80953c7cee439271bb4782445fbc24d9195a4bb3..6f6afcf3a115ada4586712673a6de9f59dee8e2c 100644
--- a/gl/inc/TGLSceneObject.h
+++ b/gl/inc/TGLSceneObject.h
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLSceneObject.h,v 1.9 2004/11/02 16:55:20 brun Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLSceneObject.h,v 1.12 2004/11/18 14:37:02 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -120,6 +120,8 @@ protected:
 private:
    TGLSceneObject(const TGLSceneObject &);
    TGLSceneObject & operator = (const TGLSceneObject &);
+   
+   ClassDef(TGLSceneObject,0)
 };
 
 ///////////////////////////////////////////////////////////////////////
diff --git a/gl/src/TArcBall.cxx b/gl/src/TArcBall.cxx
index 653f508378b9cdace5488ff3650f7de538d21094..99b86ad50bac04e69f80e6f82e8e30b4768a6bc1 100644
--- a/gl/src/TArcBall.cxx
+++ b/gl/src/TArcBall.cxx
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TArcBall.cxx,v 1.5 2004/09/17 19:33:31 brun Exp $
+// @(#)root/gl:$Name:  $:$Id: TArcBall.cxx,v 1.6 2004/09/29 06:55:13 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -15,6 +15,8 @@
 
 const Double_t Epsilon = 1.0e-5;
 
+ClassImp(TArcBall)
+   
 //Arcball sphere constants:
 //Diameter is       2.0f
 //Radius is         1.0f
diff --git a/gl/src/TGLCamera.cxx b/gl/src/TGLCamera.cxx
index 889cd4d7a29038372b60f4818b22eefad2dc108c..969eb6ca263aa8de2ed1c57c79db3d1a8e3f2db3 100644
--- a/gl/src/TGLCamera.cxx
+++ b/gl/src/TGLCamera.cxx
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLCamera.cxx,v 1.4 2004/09/14 15:37:34 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLCamera.cxx,v 1.5 2004/11/15 14:59:02 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -20,6 +20,8 @@
 
 #include "TGLCamera.h"
 
+ClassImp(TGLCamera)
+
 TGLCamera::TGLCamera(const Double_t *vv, const Int_t *vp)
               :fViewVolume(vv), fViewPort(vp),
                fZoom(1.), fDrawFrame(kFALSE)
diff --git a/gl/src/TGLKernel.cxx b/gl/src/TGLKernel.cxx
index 75b704ff6625d8f472c79f98ae3e82a17fe8082b..9d9b8f5b00ece4c0d419ea3bc17ff098277dea00 100644
--- a/gl/src/TGLKernel.cxx
+++ b/gl/src/TGLKernel.cxx
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLKernel.cxx,v 1.24 2004/10/25 15:41:09 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLKernel.cxx,v 1.25 2004/11/22 23:39:52 rdm Exp $
 // Author: Valery Fine(fine@vxcern.cern.ch)   05/03/97
 
 /*************************************************************************
@@ -33,6 +33,8 @@
  #define  ColorOffset 0
 #endif
 
+ClassImp(TGLKernel)
+
 GLenum GLCommand[] = { GLConstants(GL_)  };
 
 
diff --git a/gl/src/TGLRender.cxx b/gl/src/TGLRender.cxx
index 9c4838c43b9f00034cae03cf4250c682c5f0f83a..4978fdbf5d2f180cdb9703a38ac0ad6910b0e812 100644
--- a/gl/src/TGLRender.cxx
+++ b/gl/src/TGLRender.cxx
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLRender.cxx,v 1.14 2004/11/22 23:38:31 rdm Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLRender.cxx,v 1.15 2004/11/23 14:00:29 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -25,6 +25,8 @@
 #include "TGLRender.h"
 #include "TGLCamera.h"
 
+ClassImp(TGLRender)
+
 namespace std {} using namespace std;
 
 const UChar_t gXyz[][8] = {{0x44, 0x44, 0x28, 0x10, 0x10, 0x28, 0x44, 0x44},
diff --git a/gl/src/TGLSceneObject.cxx b/gl/src/TGLSceneObject.cxx
index 19a6b49756c31eea882270e198e764314b39162e..05b6db751f3a49f340aec91e0e55590ac9dd26e2 100644
--- a/gl/src/TGLSceneObject.cxx
+++ b/gl/src/TGLSceneObject.cxx
@@ -1,4 +1,4 @@
-// @(#)root/gl:$Name:  $:$Id: TGLSceneObject.cxx,v 1.17 2004/11/18 14:37:02 brun Exp $
+// @(#)root/gl:$Name:  $:$Id: TGLSceneObject.cxx,v 1.18 2004/11/19 06:36:28 brun Exp $
 // Author:  Timur Pocheptsov  03/08/2004
 
 /*************************************************************************
@@ -21,6 +21,8 @@
 
 #include "TGLSceneObject.h"
 
+ClassImp(TGLSceneObject)
+
 static GLUtriangulatorObj *GetTesselator()
 {
    static struct Init {