diff --git a/.gitattributes b/.gitattributes
index 0fd892b8c42..d662a9867bd 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1417,10 +1417,7 @@ GraphicsView/demo/Alpha_shapes_2/Alpha_shapes_2.ui -text
 GraphicsView/demo/Alpha_shapes_2/about_Alpha_shapes_2.html svneol=native#text/html
 GraphicsView/demo/Apollonius_graph_2/Apollonius_graph_2.qrc -text
 GraphicsView/demo/Apollonius_graph_2/Apollonius_graph_2.ui -text
-GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.qrc -text
-GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.ui -text
 GraphicsView/demo/Apollonius_graph_2/about_Apollonius_graph_2.html svneol=native#text/html
-GraphicsView/demo/Apollonius_graph_2/about_Stream_lines_2.html svneol=native#text/html
 GraphicsView/demo/Bounding_volumes/Bounding_volumes.qrc -text
 GraphicsView/demo/Bounding_volumes/Bounding_volumes.ui -text
 GraphicsView/demo/Bounding_volumes/about_Bounding_volumes.html svneol=native#text/html
diff --git a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.cpp b/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.cpp
deleted file mode 100644
index 8a8421c9315..00000000000
--- a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.cpp
+++ /dev/null
@@ -1,246 +0,0 @@
-#include <fstream>
-
-// CGAL headers
-#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
-#include <CGAL/Stream_lines_2.h>
-#include <CGAL/Runge_kutta_integrator_2.h>
-#include <CGAL/Regular_grid_2.h>
-
-
-// Qt headers
-#include <QtGui>
-#include <QString>
-#include <QActionGroup>
-#include <QFileDialog>
-#include <QInputDialog>
-
-// GraphicsView items and event filters (input classes)
-#include <CGAL/Qt/StreamLinesGraphicsItem.h>
-
-// for viewportsBbox
-#include <CGAL/Qt/utility.h>
- 
-// the two base classes
-#include "ui_Stream_lines_2.h"
-#include <CGAL/Qt/DemosMainWindow.h>
-
-typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
-
-typedef CGAL::Regular_grid_2<K> Regular_grid;
-typedef CGAL::Runge_kutta_integrator_2<Regular_grid> Runge_kutta_integrator;
-typedef CGAL::Stream_lines_2<Regular_grid, Runge_kutta_integrator> Stream_lines;
-typedef CGAL::Stream_lines_2<Regular_grid, Runge_kutta_integrator>::Stream_line_iterator_2 Stream_line_iterator;
-typedef CGAL::Stream_lines_2<Regular_grid, Runge_kutta_integrator>::Point_iterator_2 Point_iterator;
-typedef CGAL::Stream_lines_2<Regular_grid, Runge_kutta_integrator>::Point_2 Point_2;
-typedef CGAL::Stream_lines_2<Regular_grid, Runge_kutta_integrator>::Vector_2 Vector;
-
-typedef K::Iso_rectangle_2 Iso_rectangle_2;
-
-
-
-class MainWindow :
-  public CGAL::Qt::DemosMainWindow,
-  public Ui::Stream_lines_2
-{
-  Q_OBJECT
-  
-private:  
-  Stream_lines * stream_lines;
-  Runge_kutta_integrator * runge_kutta_integrator;
-  Regular_grid * regular_grid;
-  double density;
-  double ratio;
-  double integrating;
-  int sampling;  
-  QGraphicsScene scene;  
-
-  CGAL::Qt::StreamLinesGraphicsItem<Stream_lines,K> * sli;
-
-public:
-  MainWindow();
-
-public slots:
-
-  void on_actionLoadPoints_triggered();
-
-  void on_actionClear_triggered();
-
-  void on_actionSavePoints_triggered();
-
-  void on_actionGenerate_triggered();
-
-  void on_actionRecenter_triggered();
-
-  virtual void open(QString fileName);
-
-signals:
-  void changed();
-};
-
-
-MainWindow::MainWindow()
-  : DemosMainWindow(), density(12.0), ratio(1.6), integrating(1.0), sampling(1)
-{
-  setupUi(this);
-
-  this->graphicsView->setAcceptDrops(false);
-
-
-  // Manual handling of actions
-  //
-
-  QObject::connect(this->actionQuit, SIGNAL(triggered()), 
-		   this, SLOT(close()));
-
-  //
-  // Setup the scene and the view
-  //
-  scene.setItemIndexMethod(QGraphicsScene::NoIndex);
-  scene.setSceneRect(-100, -100, 100, 100);
-  this->graphicsView->setScene(&scene);
-
-  // Turn the vertical axis upside down
-  this->graphicsView->matrix().scale(1, -1);
-                                                      
-  // The navigation adds zooming and translation functionality to the
-  // QGraphicsView
-  this->addNavigation(this->graphicsView);
-
-  this->setupStatusBar();
-  this->setupOptionsMenu();
-  this->addAboutDemo(":/cgal/help/about_Stream_lines_2.html");
-  this->addAboutCGAL();
-
-  this->addRecentFiles(this->menuFile, this->actionQuit);
-  connect(this, SIGNAL(openRecentFile(QString)),
-	  this, SLOT(open(QString)));
-}
-
-
-
-/* 
- *  Qt Automatic Connections
- *  http://doc.trolltech.com/4.4/designer-using-a-component.html#automatic-connections
- * 
- *  setupUi(this) generates connections to the slots named
- *  "on_<action_name>_<signal_name>"
- */
-
-
-void
-MainWindow::on_actionClear_triggered()
-{
-  emit(changed());
-}
-
-
-void
-MainWindow::on_actionGenerate_triggered()
-{
-  stream_lines = new Stream_lines(*regular_grid, *runge_kutta_integrator, density, ratio, sampling);
-
-  sli = new CGAL::Qt::StreamLinesGraphicsItem<Stream_lines, K>(stream_lines);
-
-  QObject::connect(this, SIGNAL(changed()),
-		   sli, SLOT(modelChanged()));
-
-  //sli->setVerticesPen(QPen(Qt::red, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
-  sli->setEdgesPen(QPen(Qt::blue, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
-  scene.addItem(sli);
-
-  emit(changed());
-}
-
-
-
-void
-MainWindow::on_actionLoadPoints_triggered()
-{
-  QString fileName = QFileDialog::getOpenFileName(this,
-						  tr("Open grid file"),
-						  ".");
-  if(! fileName.isEmpty()){
-    open(fileName);
-  }
-}
-
-
-void
-MainWindow::open(QString fileName)
-{
-  // wait cursor
-  QApplication::setOverrideCursor(Qt::WaitCursor);
-  std::ifstream ifs(qPrintable(fileName));
-
-  runge_kutta_integrator = new Runge_kutta_integrator(integrating);
-  double iXSize, iYSize;
-  iXSize = iYSize = 512;
-  unsigned int x_samples, y_samples;
-  ifs >> x_samples;
-  ifs >> y_samples;
-  regular_grid = new Regular_grid(x_samples, y_samples, iXSize, iYSize);
-  std::cerr << "fill grid" << std::endl;
-  /*fill the grid with the appropreate values*/
-  for (unsigned int i=0;i<x_samples;i++)
-    for (unsigned int j=0;j<y_samples;j++)
-      {
-        double xval, yval;
-        ifs >> xval;
-        ifs >> yval;
-        regular_grid->set_field(i, j, Vector(xval, yval));
-      }
-  ifs.close();
-    std::cerr << "close the stream" << std::endl;
-  // default cursor
-  QApplication::restoreOverrideCursor();
-  this->addToRecentFiles(fileName);
-  //  actionRecenter->trigger();
-  on_actionGenerate_triggered();
-  emit(changed());
-    
-}
-
-void
-MainWindow::on_actionSavePoints_triggered()
-{
-  /*
-  QString fileName = QFileDialog::getSaveFileName(this,
-						  tr("Save points"),
-						  ".");
-  if(! fileName.isEmpty()){
-    std::ofstream ofs(qPrintable(fileName));
-  
-  }
-  */
-}
-
-
-void
-MainWindow::on_actionRecenter_triggered()
-{
-  this->graphicsView->setSceneRect(sli->boundingRect());
-  this->graphicsView->fitInView(sli->boundingRect(), Qt::KeepAspectRatio);  
-}
-
-
-#include "Stream_lines_2.moc"
-
-int main(int argc, char **argv)
-{
-  QApplication app(argc, argv);
-
-  app.setOrganizationDomain("geometryfactory.com");
-  app.setOrganizationName("GeometryFactory");
-  app.setApplicationName("Stream_lines_2 demo");
-
-  // Import resources from libCGALQt4.
-  // See http://doc.trolltech.com/4.4/qdir.html#Q_INIT_RESOURCE
-  Q_INIT_RESOURCE(File);
-  Q_INIT_RESOURCE(Stream_lines_2);
-  Q_INIT_RESOURCE(Input);
-  Q_INIT_RESOURCE(CGAL);
-
-  MainWindow mainWindow;
-  mainWindow.show();
-  return app.exec();
-}
diff --git a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.qrc b/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.qrc
deleted file mode 100644
index 57cb0fa9186..00000000000
--- a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.qrc
+++ /dev/null
@@ -1,8 +0,0 @@
-<RCC>
-  <qresource prefix="/cgal/Actions" >
-  </qresource>
-  <qresource prefix="/cgal/help" >
-    <file alias="about_CGAL.html" >../resources/about_CGAL.html</file>
-    <file>about_Stream_lines_2.html</file>
-  </qresource>
-</RCC>
diff --git a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.ui b/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.ui
deleted file mode 100644
index 392a7f60ac4..00000000000
--- a/GraphicsView/demo/Apollonius_graph_2/Stream_lines_2.ui
+++ /dev/null
@@ -1,213 +0,0 @@
-<ui version="4.0" >
- <author>GeometryFactory</author>
- <class>Stream_lines_2</class>
- <widget class="QMainWindow" name="Stream_lines_2" >
-  <property name="geometry" >
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>800</width>
-    <height>600</height>
-   </rect>
-  </property>
-  <property name="windowTitle" >
-   <string>CGAL Streamlines</string>
-  </property>
-  <property name="windowIcon" >
-   <iconset resource="../resources/CGAL.qrc" >
-    <normaloff>:/cgal/logos/cgal_icon</normaloff>:/cgal/logos/cgal_icon</iconset>
-  </property>
-  <widget class="QWidget" name="centralwidget" >
-   <layout class="QGridLayout" >
-    <item row="0" column="0" >
-     <widget class="QGraphicsView" name="graphicsView" >
-      <property name="focusPolicy" >
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="verticalScrollBarPolicy" >
-       <enum>Qt::ScrollBarAlwaysOn</enum>
-      </property>
-      <property name="horizontalScrollBarPolicy" >
-       <enum>Qt::ScrollBarAlwaysOn</enum>
-      </property>
-      <property name="transformationAnchor" >
-       <enum>QGraphicsView::NoAnchor</enum>
-      </property>
-     </widget>
-    </item>
-   </layout>
-  </widget>
-  <widget class="QStatusBar" name="statusbar" />
-  <widget class="QToolBar" name="fileToolBar" >
-   <property name="windowTitle" >
-    <string>File Tools</string>
-   </property>
-   <attribute name="toolBarArea" >
-    <enum>TopToolBarArea</enum>
-   </attribute>
-   <attribute name="toolBarBreak" >
-    <bool>false</bool>
-   </attribute>
-   <addaction name="actionClear" />
-   <addaction name="actionLoadPoints" />
-   <addaction name="actionSavePoints" />
-  </widget>
-  <widget class="QToolBar" name="toolBar" >
-   <property name="windowTitle" >
-    <string>Visualization Tools</string>
-   </property>
-   <attribute name="toolBarArea" >
-    <enum>TopToolBarArea</enum>
-   </attribute>
-   <attribute name="toolBarBreak" >
-    <bool>false</bool>
-   </attribute>
-   <addaction name="actionInsertPoint" />
-   <addaction name="actionRecenter" />
-  </widget>
-  <widget class="QMenuBar" name="menubar" >
-   <property name="geometry" >
-    <rect>
-     <x>0</x>
-     <y>0</y>
-     <width>800</width>
-     <height>19</height>
-    </rect>
-   </property>
-   <widget class="QMenu" name="menuFile" >
-    <property name="title" >
-     <string>&amp;File</string>
-    </property>
-    <addaction name="separator" />
-    <addaction name="actionClear" />
-    <addaction name="actionLoadPoints" />
-    <addaction name="actionSavePoints" />
-    <addaction name="separator" />
-    <addaction name="actionQuit" />
-   </widget>
-   <widget class="QMenu" name="menuEdit" >
-    <property name="title" >
-     <string>&amp;Edit</string>
-    </property>
-    <addaction name="actionInsertRandomPoints" />
-   </widget>
-   <widget class="QMenu" name="menuTools" >
-    <property name="title" >
-     <string>&amp;Tools</string>
-    </property>
-    <addaction name="actionInsertPoint" />
-    <addaction name="separator" />
-    <addaction name="actionRecenter" />
-   </widget>
-   <addaction name="menuFile" />
-   <addaction name="menuEdit" />
-   <addaction name="menuTools" />
-  </widget>
-  <action name="actionAbout" >
-   <property name="text" >
-    <string>&amp;About</string>
-   </property>
-  </action>
-  <action name="actionAboutCGAL" >
-   <property name="text" >
-    <string>About &amp;CGAL</string>
-   </property>
-  </action>
-  <action name="actionQuit" >
-   <property name="text" >
-    <string>&amp;Quit</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+Q</string>
-   </property>
-  </action>
-  <action name="actionInsertRandomPoints" >
-   <property name="text" >
-    <string>&amp;Insert random points</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+I</string>
-   </property>
-  </action>
- 
-  <action name="actionInsertPoint" >
-   <property name="checkable" >
-    <bool>true</bool>
-   </property>
-   <property name="checked" >
-    <bool>false</bool>
-   </property>
-   <property name="icon" >
-    <iconset resource="../icons/Input.qrc" >
-     <normaloff>:/cgal/Input/inputPoint.png</normaloff>:/cgal/Input/inputPoint.png</iconset>
-   </property>
-   <property name="text" >
-    <string>&amp;Insert Point</string>
-   </property>
-   <property name="toolTip" >
-    <string>Insert Point</string>
-   </property>
-   <property name="statusTip" >
-    <string>Left: Insert vtx</string>
-   </property>
-  </action>
-  <action name="actionClear" >
-   <property name="icon" >
-    <iconset resource="../icons/File.qrc" >
-     <normaloff>:/cgal/fileToolbar/fileNew.png</normaloff>:/cgal/fileToolbar/fileNew.png</iconset>
-   </property>
-   <property name="text" >
-    <string>&amp;Clear</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+C</string>
-   </property>
-  </action>
-
-  <action name="actionLoadPoints" >
-   <property name="icon" >
-    <iconset resource="../icons/File.qrc" >
-     <normaloff>:/cgal/fileToolbar/fileOpen.png</normaloff>:/cgal/fileToolbar/fileOpen.png</iconset>
-   </property>
-   <property name="text" >
-    <string>&amp;Load Points...</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+L</string>
-   </property>
-  </action>
-  <action name="actionSavePoints" >
-   <property name="icon" >
-    <iconset resource="../icons/File.qrc" >
-     <normaloff>:/cgal/fileToolbar/fileSave.png</normaloff>:/cgal/fileToolbar/fileSave.png</iconset>
-   </property>
-   <property name="text" >
-    <string>&amp;Save Points...</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+S</string>
-   </property>
-  </action>
-
-  <action name="actionRecenter" >
-   <property name="icon" >
-    <iconset resource="../icons/Input.qrc" >
-     <normaloff>:/cgal/Input/zoom-best-fit</normaloff>:/cgal/Input/zoom-best-fit</iconset>
-   </property>
-   <property name="text" >
-    <string>Re&amp;center the viewport</string>
-   </property>
-   <property name="shortcut" >
-    <string>Ctrl+R</string>
-   </property>
-  </action>
-
- </widget>
- <resources>
-  <include location="Stream_lines_2.qrc" />
-  <include location="../icons/File.qrc" />
-  <include location="../resources/CGAL.qrc" />
-  <include location="../icons/Input.qrc" />
- </resources>
- <connections/>
-</ui>
diff --git a/GraphicsView/demo/Apollonius_graph_2/about_Stream_lines_2.html b/GraphicsView/demo/Apollonius_graph_2/about_Stream_lines_2.html
deleted file mode 100644
index febbb883260..00000000000
--- a/GraphicsView/demo/Apollonius_graph_2/about_Stream_lines_2.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<html>
-  <body>
-    <h2>Apollonius Graph</h2>
-    <p>Copyright &copy; 2010 GeometryFactory</p>
-    <p>This application illustrates the 2D Apollonius graph.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/ApolloniusGraph2">the online
-        manual</a>.</p>
-  </body>
-</html>