diff --git a/doc/examples.md b/doc/examples.md
index d974aa6..8256e92 100644
--- a/doc/examples.md
+++ b/doc/examples.md
@@ -4,8 +4,8 @@
 
 die folgenden Sivas Nummern können als Referenz für die Programmierung bzw. zur Visualisierung als Beispiel verwendet werden:
 
-400102196
-829522001
-200000040
-400102624
-400102325
+400102196,
+829522001,
+200000040,
+400102624,
+400102325,
diff --git a/lib/test_treeview.py b/lib/test_treeview.py
new file mode 100644
index 0000000..de90112
--- /dev/null
+++ b/lib/test_treeview.py
@@ -0,0 +1,116 @@
+import tkinter as tk
+from tkinter import ttk
+from tkinter.messagebox import showinfo
+
+ruledesigner_ids = ( '400102274', '400102275', '400102190', '400102198',
+                    '400102161', '400102277', '400102163', '400102278',
+                    '400102282', '400102284', '400102195', 'MA0000008',
+                    'MA0000004', '929055170', '400102267', '400102235',
+                    '400102236', 'MA0000006', '400102237', '400102238',
+                    '400102239', '400102268', '829416159', '924031058',
+                    '924031081', '822064091', '822066199', '822066200')
+
+parent_children_mapping = {'400102196': ['400102125', '400102126', '400102130',
+                                         '400102161', '400102163', '400102165',
+                                         '400102166', '400102167', '400102168',
+                                         '400102190', '400102195', '400102198',
+                                         '400102246', '400102247', '400102267',
+                                         '400102272', '400102274', '400102275',
+                                         '400102277', '400102278', '400102282',
+                                         '400102284', '400102417', '720002003',
+                                         '721001034', '821114025', '822064091',
+                                         '822066085', '822996075', '829416061',
+                                         '829516004', '911021113', '911021181',
+                                         '911021259', '911091054', '911091096',
+                                         '911091097', '911251013', '912011009',
+                                         '919050006', '924031058',
+                                         '924031081'],
+                           '400102282': ['822066026', '822066089', '919010052'],
+                           '400102195': [ '822066075', '822066216',
+                                         '822066154', '822066101', '822064090',
+                                         '822066196', '400102129', '822066217',
+                                         '822066160', '822066215', '913041045',
+                                         '913011009', '911011057', '822064035',
+                                         '925011006', '911091041', '913051040',
+                                         '911021112', '911021166', '825006003',
+                                         '912041005', '911011014', '911011009',
+                                         '911021144', '911021001', '913011016',
+                                         '929055170', '913011010', '911021035',
+                                         '829416065', '712000151',
+                                         '712000100'],
+                           '822066075': ['822066157', '822066162', '911261023'],
+                           '822066162': [ '822064013'], 
+                           '822066196': ['MA0000008'], 
+                           '822066160': ['MA0000004'],
+                           '822064035': ['822066065'], 
+                           '822064093': ['822066204', '822066205', '822066206', '822066207', '822066208'],
+                           '822066220': ['924031033'], 
+                           '822064091': ['822066212', '822064093', '822066220',
+                                         '822066200', '912011010', '911021156',
+                                         '822066201', '911071027', '913011109',
+                                         '911011070', '913011001', '710005021',
+                                         '919010055', '720000008', '720000007'],
+                           '400102267': ['400102235', '829416159', '829416077',
+                                         '829416079', '911021260', '911021147',
+                                         '911251014'],
+                           '400102235': ['400102236', '400102237', '400102238',
+                                         '400102239', '400102268', '911021143',
+                                         '911021054', '911021055'],
+                           '400102236': ['MA0000006'], 
+                           '829416159': ['829416089'], 
+                           '400102130': ['400102142'],
+                           '821116004': ['822026004'],
+                           '400102168': ['821116001'],
+                           '821114025': ['911081007', '821116053'],
+                           '400102167': ['821116004']}
+
+
+root_num = "400102196"
+
+# create root window
+root = tk.Tk()
+root.title('Treeview Demo - Hierarchical Data')
+root.geometry('400x200')
+
+# configure the grid layout
+root.rowconfigure(0, weight=1)
+root.columnconfigure(0, weight=1)
+
+
+# create a treeview
+tree = ttk.Treeview(root)
+# TODO hier anstatt root die Statistik rein schreiben.
+tree.heading('#0', text='root', anchor=tk.W)
+
+# adding data of first column after root
+pool = set()
+for parent,children in parent_children_mapping.items():
+    if parent not in pool:
+        tree.insert('', tk.END, text=parent, iid=parent, open=True)
+        pool.add(parent)
+    cn = children
+    # sortiere die Zahlen im Baum immer aufsteigend
+    cn.sort(reverse=True)
+    for child_id in cn:
+        if child_id not in pool:
+            pool.add(child_id)
+            if child_id not in ruledesigner_ids: rowtags = ('good')
+            else:                                rowtags = ('missing')
+            tree.insert('', tk.END, text=child_id, iid=child_id, tags=rowtags, open=True)
+            #tree.move(child_id, parent, 0)
+
+# einmal über alles gehen und alle keys an die richtige Stelle schieben
+for parent,children in parent_children_mapping.items():
+    for child_id in children:
+        tree.move(child_id, parent, 0)
+
+# https://www.askpython.com/python-modules/tkinter/tkinter-colors
+#tree.tag_configure('good', background='LawnGreen')
+tree.tag_configure('good', background='white')
+tree.tag_configure('missing', background='red')
+
+# place the Treeview widget on the root window
+tree.grid(row=0, column=0, sticky=tk.NSEW)
+
+# run the app
+root.mainloop()