    #######################################################################
    #  MACRO FILE NAME: exN03Vis6.mac                                     #
    #                                                                     #
    #  AUTHOR(S): Satoshi Tanaka                                          #
    #                                                                     #
    #  DATE:                                                              #
    #        Nov      07, 2001                                            #
    #        Sept     08-09, 2001 (at Hebden Bridge, UK)                  #
    #        June     20, 2001                                            #
    #        November 26, 2000                                            #
    #        October  17, 2000                                            #
    #                                                                     #
    #  CONTENTS: A macro to demonstrate the VRMLFILE driver               #
    #                                                                     #
    #  USAGE:  % gmake visclean                                           #
    #          % $G4BINDIR/exampleN03                                     #
    #          Idle> /control/execute visTutor/exN03Vis7.mac              #
    #                                                                     #
    #  REQUIRED PLATFORMS & SOFTWARES: Unix, X-window,                    #
    #                                  VRML viewer (e.g. VRMLview)        #
    #                                                                     #
    #  ENVIRONMENTAL VARIABLES (C-MACROS) FOR INSTALLATION:               #
    #  (See geant4/source/visualization/README for details.)              #
    #    * Unnecessary                                                    #
    #                                                                     #
    #  ENVIRONMENTAL VARIABLES (C-MACROS) FOR COMPILATION:                #
    #  (See geant4/source/visualization/README for details.)              #
    #    * Unnecessary                                                    #
    #                                                                     #
    #  RECOMMENDED ENVIRONMENTAL VARIABLES FOR VISUALIZATION:             #
    #                                                                     #
    #    % setenv G4VRMLFILE_VIEWER        vrmlview                       #
    #     ( The default value is "NONE".)                                 #
    #                                                                     #
    #  ADDITIONAL NOTES:                                                  #
    #   The VRML-file viewer "vrmlview" is obtainable from the following  #
    #   Web site:                                                         #
    #      http://www.sim.no/downloads.html                               #
    #                                                                     #
    #######################################################################

    ###################################################
    # Visualization of detector geometry and events
    # with the VRML2FILE driver.
    ###################################################

    # Store particle trajactories for visualization
    /tracking/storeTrajectory 1

    # Invoke the VRML2FILE driver
    #  Note: The VRML1FILE driver generates VRML 1.0 format files.
    #        The VRML2FILE driver generates VRML 2.0 format files.
    /vis/open VRML2FILE

    # Create an empty scene and add the detector geometry to it
    /vis/drawVolume

    # Visualize 3 events in the wireframe mode
    #  Note: The command /vis/scene/add/trajectories
    #        is not necessary in exampleN03,
    #        since the C++ method DrawTrajectory() is
    #        described in the event action.
    #  Note: "/vis/viewer/set/style wireframe" means
    #       "half-transparent" in the VRML2FILE driver.
    #       It is a convention only for this driver.
    #/vis/scene/add/trajectories
    /vis/viewer/set/style wireframe
    /run/beamOn 3