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diff --git a/examples/compositeline.py b/examples/compositeline.py
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+++ b/examples/compositeline.py
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+#!/usr/bin/env python
+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2016-2019 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ###########################################################################*/
+"""
+Example to show the use of markers to draw head and tail of lines.
+"""
+from __future__ import division
+
+__license__ = "MIT"
+
+import logging
+from silx.gui.plot import Plot1D
+from silx.gui import qt
+import numpy
+
+
+logging.basicConfig()
+logger = logging.getLogger(__name__)
+
+
+def main(argv=None):
+    """Display few lines with markers.
+    """
+    global app  # QApplication must be global to avoid seg fault on quit
+    app = qt.QApplication([])
+    sys.excepthook = qt.exceptionHandler
+
+    mainWindow = Plot1D(backend="gl")
+    mainWindow.setAttribute(qt.Qt.WA_DeleteOnClose)
+    plot = mainWindow
+    plot.setDataMargins(0.1, 0.1, 0.1, 0.1)
+
+    plot.addCurve(x=[-10,0,0,-10,-10], y=[90,90,10,10,90], legend="box1", color="gray")
+    plot.addCurve(x=[110,100,100,110,110], y=[90,90,10,10,90], legend="box2", color="gray")
+    plot.addCurve(y=[-10,0,0,-10,-10], x=[90,90,10,10,90], legend="box3", color="gray")
+    plot.addCurve(y=[110,100,100,110,110], x=[90,90,10,10,90], legend="box4", color="gray")
+
+    def addLine(source, destination, symbolSource, symbolDestination, legend, color):
+        line = numpy.array([source, destination]).T
+        plot.addCurve(x=line[0,:], y=line[1,:], color=color, legend=legend)
+        plot.addMarker(x=source[0], y=source[1], symbol=symbolSource, color=color)
+        plot.addMarker(x=destination[0], y=destination[1], symbol=symbolDestination, color=color)
+
+    addLine([0, 50], [100, 50], "caretleft", "caretright", "l1", "red")
+    addLine([0, 30], [100, 30], "tickup", "tickdown", "l2", "blue")
+    addLine([0, 70], [100, 70], "|", "|", "l3", "black")
+
+    addLine([50, 0], [50, 100], "caretdown", "caretup", "l4", "red")
+    addLine([30, 0], [30, 100], "tickleft", "tickright", "l5", "blue")
+    addLine([70, 0], [70, 100], "_", "_", "l6", "black")
+
+    mainWindow.setVisible(True)
+    return app.exec_()
+
+
+if __name__ == "__main__":
+    import sys
+    sys.exit(main(argv=sys.argv[1:]))