diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000..b985da1
--- /dev/null
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,16 @@
+eclipse.preferences.version=1
+encoding//xmind/__init__.py=utf-8
+encoding//xmind/core/__init__.py=utf-8
+encoding//xmind/core/const.py=utf-8
+encoding//xmind/core/loader.py=utf-8
+encoding//xmind/core/notes.py=utf-8
+encoding//xmind/core/workbook.py=utf-8
+encoding//xmind/framework/Enum.py=utf-8
+encoding//xmind/framework/UnitTest.py=utf-8
+encoding//xmind/framework/__init__.py=utf-8
+encoding//xmind/import_export/ExportFilter.py=utf-8
+encoding//xmind/import_export/GraphvizExportFilter.py=utf-8
+encoding//xmind/import_export/__init__.py=utf-8
+encoding//xmind/utils.py=utf-8
+encoding/example.py=utf-8
+encoding/setup.py=utf-8
diff --git a/README.md b/README.md
index 029b622..7d236d7 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-#XMind SDK for python
+#Fork of XMind SDK for python with extensions for import / export (e.g. Graphviz)
 
 **XMind SDK for python** to help Python developers to easily work with XMind files and build XMind extensions.
 
@@ -6,7 +6,7 @@
 
 Clone the repository to a local working directory
 
-	git clone https://github.com/xmindltd/xmind-sdk-python.git
+	git clone https://github.com/Almerxsese/xmind-sdk-python
 	
 Now there will be a directory named `xmind-sdk-python` under the current directory. Change to the directory `xmind-sdk-python` and install **XMind SDK for python**.
 
@@ -14,6 +14,12 @@ Now there will be a directory named `xmind-sdk-python` under the current directo
 	
 *It is highly recommended to install __XMind SDK for python__ under an isolated python environment using [virtualenv](https://pypi.python.org/pypi/virtualenv)*
 
+##Set PYTHONPATH
+You must set PYTHONPATH environment variable to '.'. 
+
+In Eclipse (with PyDev plugin): modify the 'Run Configuration' and define varaiable PYTHONPATH = . (with the 
+'Environment' Tab)
+
 ##Usage
 
 Open an existing XMind file or create a new XMind file and place it into a given path
diff --git a/setup.py b/setup.py
index ea1eba3..5078ec5 100644
--- a/setup.py
+++ b/setup.py
@@ -5,15 +5,15 @@
 
 setup(
     name="xmind",
-    version="0.1a.0",
+    version="0.0.1",
     packages=find_packages(),
 
     install_requires=["distribute"],
 
-    author="Woody Ai",
-    author_email="aiqi@xmind.net",
-    description="The offical XMind python SDK",
+    author="Michel Kern",
+    author_email="echopraxium@yahoo.com",
+    description="A fork of XMind python SDK with extensions for import / export (e.g. Graphviz)",
     license="MIT",
-    keywords="XMind, SDK, mind mapping",
-    url="https://github.com/xmindltd/xmind-sdk-python"
+    keywords="XMind, SDK, mind mapping, extension, import, export, graphviz",
+    url="https://github.com/Almerxsese/xmind-sdk-python"
 )
diff --git a/xmind/data/sample_text_file.txt b/xmind/data/sample_text_file.txt
new file mode 100644
index 0000000..9daeafb
--- /dev/null
+++ b/xmind/data/sample_text_file.txt
@@ -0,0 +1 @@
+test
diff --git a/xmind/framework/Enum.py b/xmind/framework/Enum.py
new file mode 100644
index 0000000..10c27e5
--- /dev/null
+++ b/xmind/framework/Enum.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.framework.Enum
+    ~~~~~~~~~~~~~~~~~
+    :mod:``xmind.framework.Enum`` provides an support for an enumerated type 
+    :copyright: http://code.activestate.com/recipes/413486-first-class-enums-in-python/
+    :copyright: Zoran Isailovski 
+    :license:   PSF
+    :note:      source code copied from 'First Class Enums in Python (Python recipe)':
+                http://code.activestate.com/recipes/413486-first-class-enums-in-python/
+"""
+
+__author__ = "http://code.activestate.com/recipes/users/2400454/ <Zoran Isailovski>"
+
+#------------------- Enum -------------------
+def Enum(*names):
+   ##assert names, "Empty enums are not supported" # <- Don't like empty enums? Uncomment!
+
+   class EnumClass(object):
+      __slots__ = names
+      def __iter__(self):        return iter(constants)
+      def __len__(self):         return len(constants)
+      def __getitem__(self, i):  return constants[i]
+      def __repr__(self):        return 'Enum' + str(names)
+      def __str__(self):         return 'enum ' + str(constants)
+
+   class EnumValue(object):
+      __slots__ = ('__value')
+      def __init__(self, value): self.__value = value
+      Value = property(lambda self: self.__value)
+      EnumType = property(lambda self: EnumType)
+      def __hash__(self):        return hash(self.__value)
+      def __cmp__(self, other):
+         # C fans might want to remove the following assertion
+         # to make all enums comparable by ordinal value {;))
+         assert self.EnumType is other.EnumType, "Only values from the same enum are comparable"
+         return cmp(self.__value, other.__value)
+      def __invert__(self):      return constants[maximum - self.__value]
+      def __nonzero__(self):     return bool(self.__value)
+      def __repr__(self):        return str(names[self.__value])
+
+   maximum = len(names) - 1
+   constants = [None] * len(names)
+   for i, each in enumerate(names):
+      val = EnumValue(i)
+      setattr(EnumClass, each, val)
+      constants[i] = val
+   constants = tuple(constants)
+   EnumType = EnumClass()
+   return EnumType
+#------------------- Enum
+
+#======================== main ========================
+def main():
+   print("** xmind.framework.Enum **")
+
+   print '\n*** Enum Demo ***'
+   print '--- Days of week ---'
+   Days = Enum('Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su')
+   print Days
+   print Days.Mo
+   print Days.Fr
+   print Days.Mo < Days.Fr
+   print list(Days)
+   for each in Days:
+      print 'Day:', each
+   print '--- Yes/No ---'
+   Confirmation = Enum('No', 'Yes')
+   answer = Confirmation.No
+   print 'Your answer is not', ~answer
+
+if __name__ == '__main__':
+    main()
diff --git a/xmind/framework/UnitTest.py b/xmind/framework/UnitTest.py
new file mode 100644
index 0000000..6b3897b
--- /dev/null
+++ b/xmind/framework/UnitTest.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.framework.UnitTest
+    ------------------------
+    :mod:       ``xmind.framework.UnitTest`` provides unit test superclass 
+    :copyright: Michel Kern 
+    :license:   MIT
+"""
+
+__author__ = "echopraxium@yahoo.com <Michel Kern>"
+
+#------------------- UnitTest -------------------
+class UnitTest:
+   def __init__(self):
+      self.name = "unit_test"
+      
+   def run(self):
+      print("> run '" + self.name + "'")
+#------------------- UnitTest
+
+#======================== main ========================
+def main():
+   print("** xmind.framework.UnitTest **")
+
+   ut = UnitTest()
+   ut.run()
+
+if __name__ == '__main__':
+    main()
diff --git a/xmind/framework/__init__.py b/xmind/framework/__init__.py
new file mode 100644
index 0000000..e382d5c
--- /dev/null
+++ b/xmind/framework/__init__.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.framework
+    ---------------
+    :copyright: Michel Kern
+    :license:   MIT
+
+"""
+__author__ = "echopraxium@yahoo.com <Michel Kern>"
+
+#======================== main ========================
+def main():
+    print("** xmind.framework module **")
+
+if __name__ == '__main__':
+    main()
diff --git a/xmind/import_export/ExportFilter.py b/xmind/import_export/ExportFilter.py
new file mode 100644
index 0000000..807cf04
--- /dev/null
+++ b/xmind/import_export/ExportFilter.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.import_export.ExportFilter
+    --------------------------------
+    :mod:       ``xmind.import_export.ExportFilter`` provide a handy way for exporting / importing 
+                XMind files to other formats (e.g: GraphViz).
+    :copyright: Michel Kern
+    :license:   MIT
+"""
+
+__author__ = "echopraxium@yahoo.com <Michel Kern>"
+
+import os
+import os.path
+from xmind.framework.Enum import Enum
+
+FILE_NOT_FOUND_ERROR         = 1
+EMPTY_OUTPUT_FILE_PATH_ERROR = 2
+RETURN_CODE = Enum('OK', 'FILE_NOT_FOUND_ERROR', 'EMPTY_OUTPUT_FILE_PATH_ERROR')
+        
+#------------------- ExportFilter -------------------
+class ExportFilter():
+    def __init__(self):
+        self.name = "export_filter"
+    
+    #---------- export() ----------    
+    def export(self, source_path, target_path):
+        print(self.name + ".export ")
+        if (not os.path.isfile(source_path)): 
+            print("source_path: '" + source_path + "' not found")
+            exit(RETURN_CODE.FILE_NOT_FOUND_ERROR)
+        return RETURN_CODE.OK
+    #---------- export()
+#------------------- ExportFilter
+
+#======================== main ========================
+def main():
+    print("** xmind.ExportFilter **")
+    export_filter = ExportFilter()
+    rc = export_filter.export("../data/sample_text_file.txt", "")
+    print(rc)
+    #pass
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/xmind/import_export/GraphvizExportFilter.py b/xmind/import_export/GraphvizExportFilter.py
new file mode 100644
index 0000000..c38e142
--- /dev/null
+++ b/xmind/import_export/GraphvizExportFilter.py
@@ -0,0 +1,172 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.import_export.GraphvizExportFilter
+    ----------------------------------------
+    :mod:       ``xmind.import_export.ExportFilter`` provide a handy way for exporting 
+                XMind files to dot format (see http://www.graphviz.org/pdf/dotguide.pdf)
+                GraphViz (http://www.graphviz.org/) 
+    :copyright: Michel Kern
+    :license:   MIT
+"""
+
+__author__ = "echopraxium@yahoo.com <Michel Kern>"
+
+import os
+import os.path
+import xmind
+from xmind.core       import workbook,saver
+from xmind.core.topic import TopicElement
+from ExportFilter     import ExportFilter
+from ExportFilter     import FILE_NOT_FOUND_ERROR, EMPTY_OUTPUT_FILE_PATH_ERROR
+
+#------------------- GraphvizExportFilter -------------------
+class GraphvizExportFilter(ExportFilter):
+    #---------- constructor ----------
+    def __init__(self):
+        ExportFilter.__init__(self)
+        self.name = "graphviz_export_filter"
+        self.output_str = ''
+        self.topic_count = 0
+        
+    #---------- traverse() ----------
+    def getOutput(self):
+        return self.output_str
+    
+    #---------- export() ----------    
+    def export(self, source_path, target_path):
+        print(self.name + ".export ")
+            
+        if (not os.path.isfile(source_path)): 
+            print("> *ERROR* source_path: '" + source_path + "' not found")
+            exit(FILE_NOT_FOUND_ERROR)
+           
+        # load an existing file or create a new workbook if nothing is found 
+        workbook   = xmind.load(source_path) 
+        worksheet  = workbook.getPrimarySheet() # get the first sheet
+        root_topic = worksheet.getRootTopic()   # get the root topic of this sheet
+        
+        self.generateGraphvizDotString(root_topic)
+        self.writeGraphvizDotToFile(target_path)
+        self.generateImageFile(target_path, '../data/out.pdf')
+        
+        print(">> export done")
+        
+    #---------- generateGraphvizDotString() ----------  
+    def generateGraphvizDotString(self, root_topic):
+        self.output_str = u"digraph G {\n"
+        
+        #self.output_str = self.output_str + u'    overlap=scalexy;';
+        #self.output_str = self.output_str + u'    ranksep=3;\n'
+        #self.output_str = self.output_str + u'    ratio=auto;\n'
+
+        self.output_str = self.output_str + u'root=topic_1;'
+        self.output_str = self.output_str + u'overlap=false;';
+
+        self.traverse(root_topic)    
+        self.output_str = self.output_str + u"}"
+    #---------- generateGraphvizDotString()
+    
+    #---------- writeGraphvizDotToFile() ----------  
+    def writeGraphvizDotToFile(self, target_path):
+        if (target_path == ''): 
+            print("> *ERROR* target_path is empty")
+            exit(EMPTY_OUTPUT_FILE_PATH_ERROR)
+            
+        out_fd = open(target_path, "w")
+        out_fd.write(self.output_str.encode(('utf8')))
+        out_fd.close()
+    #---------- writeGraphvizDotToFile()
+    
+    #---------- generateImageFile() ----------  
+    def generateImageFile(self, dot_input_path, img_output_path):
+        if (img_output_path == ''): 
+            print("> *ERROR* output_path is empty")
+            exit(EMPTY_OUTPUT_FILE_PATH_ERROR)
+            
+        #graphviz_tool = 'dot'
+        graphviz_tool = 'twopi'
+        graphviz_dot_path = 'C:\\Program Files (x86)\\Graphviz\\bin\\' + graphviz_tool + '.exe'
+        if (not os.path.isfile(graphviz_dot_path)): 
+            print("> *ERROR* Graphviz dot.exe: '" + graphviz_dot_path + "' not found")
+            exit(FILE_NOT_FOUND_ERROR)
+        
+        # dot -Tps -l lib.ps file.gv -o file.ps
+        print(os.getcwd())
+        cmd = '\"' + graphviz_dot_path + '\" -Tpdf ' + dot_input_path + ' -o ' + img_output_path
+        print(cmd)
+        os.system(cmd)
+    #---------- generateImageFile()
+        
+    #---------- traverse() ----------
+    def traverse(self, topic, parent_id='', parent_index=0, level=0):
+        self.topic_count = self.topic_count + 1
+        topic_index = self.topic_count
+        
+        if (parent_id != ''):
+            topic_id = u'topic_' + str(parent_index) + '_' + str(topic_index)
+            self.output_str = self.output_str + u'    ' + parent_id + u'->' + topic_id + u';\n' 
+        else:
+            topic_id = u'topic_' + str(topic_index)
+        
+        indent = ' ' * (level * 2)
+        topic_title = unicode(topic.getTitle())
+        
+        msg = indent + '> ' + str(level) + ': ' + topic_title
+        
+        font_size = 30 - level*2.5
+        shape_attribute = ' shape=box, '
+        
+        # http://rich-iannone.github.io/DiagrammeR/graphviz.html
+        color_attribute = ' style=filled, color=Beige, '
+        
+        if (level == 0):
+            font_size = 35
+            shape_attribute = ' shape=box, margin=\"0.2,0.1\", '
+        elif (level == 1):
+            font_size = 30
+            shape_attribute = ' shape=box, margin=\"0.2,0.07\", '
+        else:
+            font_size = 30 - level*2.5
+            shape_attribute = ' shape=plaintext, '
+            color_attribute = ' style=filled, color=LightCyan, '
+            
+        font_attribute = u'fontname = \"Helvetica\", fontsize = ' + str(font_size) + ', '
+        
+        #if (len(topic_title) > 15):
+        #    words = topic_title.split(' ')
+        #    word_count = len(words)
+        #    multiline_topic_title= ''
+        #    word_index = 0
+        #    for word in words:
+        #        multiline_topic_title = multiline_topic_title + word[word_index]
+            
+        label_attribute = ' label=\"' + topic_title + '\", '
+        
+        self.output_str = self.output_str + u'    ' + topic_id + u' [' 
+        self.output_str = self.output_str + font_attribute + label_attribute + shape_attribute + color_attribute
+        self.output_str = self.output_str + u' ];\n'
+        
+        topics = topic.getSubTopics()
+
+        if (topics == None):
+            print(msg + ' is a LEAF')
+            return 
+        else:
+            print(msg)
+            
+        for child_topic in topics:
+            self.traverse(child_topic, topic_id, topic_index, level+1)
+    #---------- export()
+#------------------- GraphvizExportFilter
+
+#======================== main ========================
+def main():
+    print("** xmind.GraphvizExportFilter **")
+    export_filter = GraphvizExportFilter()
+    export_filter.export("../data/Hindouisme.xmind", "../data/map.dot")
+    print(export_filter.getOutput())
+    #pass
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/xmind/import_export/__init__.py b/xmind/import_export/__init__.py
new file mode 100644
index 0000000..6f9cdf1
--- /dev/null
+++ b/xmind/import_export/__init__.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    xmind.import_export module
+    --------------------------
+    :copyright: Michel Kern
+    :license:   MIT
+
+"""
+__author__ = "echopraxium@yahoo.com <Michel Kern>"
+
+#======================== main ========================
+def main():
+    print("** xmind.import_export module **")
+
+if __name__ == '__main__':
+    main()