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/*==============================================================================
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/*============================================================================
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  Project:
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  Project:
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  JAVA Source file for the class Tracer
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  JAVA Source file for the class Tracer
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  COPYRIGHT (C), 1998, Thomas Baier
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  COPYRIGHT (C), 1998-2000, Thomas Baier, R Core development Team
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 *  This program is free software; you can redistribute it and/or modify
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *  (at your option) any later version.
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 *
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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  $Source: /scratch/CVS-ARCHIVE/R/doc/html/search/Tracer.java,v $
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  $Revision: 1.3 $
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  $Revision: 1.4 $
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  $Date: 1999/08/10 09:56:03 $
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  $Date: 2000/02/10 17:03:55 $
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  $Author: ripley $
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  $Author: leisch $
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==============================================================================*/
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============================================================================*/
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/* -------------------------------- Imports --------------------------------- */
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import java.applet.*;
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import java.applet.*;
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import java.awt.*;
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import java.awt.*;
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import java.net.*;
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import java.net.*;
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import java.io.*;
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import java.io.*;
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/*==============================================================================
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                          Interface of class Tracer
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==============================================================================*/
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/*------------------------------------------------------------------------------
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  CLASS:    Tracer
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  SUPER:    Frame
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  CONF. TO:
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  PURPOSE:  provide a tracing interface for every browser
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  NOTES:
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  HISTORY:  98-05-10: created
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------------------------------------------------------------------------------*/
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public class Tracer extends Frame
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public class Tracer extends Frame
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{
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{
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  /*============================================================================
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                                Public methods
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  ============================================================================*/
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  /*----------------------------------------------------------------------------
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    INTERFACE:
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    PURPOSE:   application front-end, create tracer if required, trace string
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    NOTES:
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    PARAMS:
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    THROWS:
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    RETURNS:   void
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    HISTORY:   98-05-10: created
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  ----------------------------------------------------------------------------*/
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  public static void write (String string)
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  public static void write (String string)
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  {
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  {
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    //create a trace window
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    //create a trace window
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    /*
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//       if (cTracer == null) {
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    if (cTracer == null) {
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 //        cTracer = new Tracer ();
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      cTracer = new Tracer ();
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 //      }
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    }
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 //      cTracer._write (string);
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    cTracer._write (string);
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    */
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    return;
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    return;
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  }
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  }
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  /*----------------------------------------------------------------------------
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    INTERFACE:
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    PURPOSE:
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    NOTES:
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    PARAMS:
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    THROWS:
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    RETURNS:   void
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    HISTORY:   98-05-10: created
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  ----------------------------------------------------------------------------*/
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  public static void start ()
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  public static void start ()
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  {
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  {
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    /*
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  //  if (cTracer != null) {
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    if (cTracer != null) {
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  //    cTracer.show ();
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      cTracer.show ();
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 //   }
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    }
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    */
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    return;
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    return;
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  }
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  }
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  /*----------------------------------------------------------------------------
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    INTERFACE:
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    PURPOSE:
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    NOTES:
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    PARAMS:
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    THROWS:
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    RETURNS:   void
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    HISTORY:   98-05-10: created
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               98-11-14: replaced deprecated hide() with setVisible()
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  ----------------------------------------------------------------------------*/
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  public static void stop ()
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  public static void stop ()
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  {
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  {
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  //  if (cTracer != null) {
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    //    if (cTracer != null) {
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   //   cTracer.setVisible (false);
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    //  cTracer.setVisible (false);
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    //}
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    //}
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    return;
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    return;
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  }
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  }
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  /*============================================================================
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                              Protected methods
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  ============================================================================*/
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  /*============================================================================
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                               Private methods
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  ============================================================================*/
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  /*----------------------------------------------------------------------------
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    INTERFACE:
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    PURPOSE:   default constructor
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    NOTES:
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    PARAMS:
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    THROWS:
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    RETURNS:   void
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    HISTORY:   98-05-10: created
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  ----------------------------------------------------------------------------*/
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  private Tracer ()
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  private Tracer ()
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  {
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  {
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    super ("Java Applet Tracer");
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    super ("Java Applet Tracer");
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    // construct a layout manager
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    // construct a layout manager
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    return;
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    return;
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  }
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  }
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  /*----------------------------------------------------------------------------
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    INTERFACE:
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    PURPOSE:   write a string to the tracer
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    NOTES:
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    PARAMS:
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    THROWS:
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    RETURNS:   void
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    HISTORY:   98-05-10: created
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               98-11-14: replaced deprecated appendText() with append()
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  ----------------------------------------------------------------------------*/
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  private void _write (String string)
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  private void _write (String string)
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  {
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  {
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    iOutput.append (string);
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    iOutput.append (string);
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    return;
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    return;
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  }
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  }
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  /*============================================================================
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                             Instance Variables
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  ============================================================================*/
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  private TextArea iOutput;
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  private TextArea iOutput;
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  /*============================================================================
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                                Static Data
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  ============================================================================*/
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  private static Tracer cTracer = null;
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  private static Tracer cTracer = null;
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}
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}
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/*==============================================================================
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  HISTORY:
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  $Log: Tracer.java,v $
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  Revision 1.3  1999/08/10 09:56:03  ripley
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  change FSF address in copyrights
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  add some copyrights in src/gnome and elsewhere
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  Revision 1.2  1999/03/04 17:15:19  leisch
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  various bugfixes
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  Revision 1.1.4.1  1999/03/02 15:19:58  leisch
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  search used only kewords, no titles
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  Revision 1.3  1998/11/14 23:33:25  baier
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  adjusted to JDK 1.1
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  Revision 1.2  1998/05/10 22:57:14  baier
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  tracer window disabled
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  Revision 1.1  1998/05/10 02:44:44  baier
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  Initial revision
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==============================================================================*/
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// Local Variables:
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// Local Variables:
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// mode: Java
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// mode: Java
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// mode: font-lock
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// mode: font-lock
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// End:
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// End: