diff --git a/cybertools/typology/README.txt b/cybertools/typology/README.txt
index 77c3c89..c4af47f 100644
--- a/cybertools/typology/README.txt
+++ b/cybertools/typology/README.txt
@@ -1,8 +1,6 @@
 A Basic API for Dynamic Typing
 ==============================
 
-  ($Id$)
-
 The typology package offers a basic standard API for associating
 arbitrary objects with types that may then be used for controlling
 execution of code, helping with search interfaces or editing of
@@ -20,9 +18,9 @@ we will then apply dynamic typing to Person objects:
   >>> from cybertools.organize.party import Person
 
   >>> from datetime import date
-  >>> pdata = ((u'John', u'Smith', '1956-08-01'),
-  ...          (u'David', u'Waters', '1972-12-24'),
-  ...          (u'Carla', u'Myers', '1999-10-11'))
+  >>> pdata = (('John', 'Smith', '1956-08-01'),
+  ...          ('David', 'Waters', '1972-12-24'),
+  ...          ('Carla', 'Myers', '2015-10-11'))
   >>> persons = [Person(f, s, date(*[int(d) for d in b.split('-')]))
   ...                         for f, s, b in pdata]
 
@@ -51,7 +49,7 @@ a global utility that does the real work.
 We can now look what the type is telling us about the persons:
 
   >>> john_type.title
-  u'Adult'
+  'Adult'
   >>> john_type.token
   'organize.person.agegroup.adult'
   >>> david_type.token
@@ -90,7 +88,7 @@ another (possibly persistent) object knowing about the available types.
   >>> typeManager = component.getUtility(IAgeGroupManager)
   >>> types = typeManager.types
   >>> [t.title for t in types]
-  [u'Child', u'Adult']
+  ['Child', 'Adult']
   >>> types[0] == carla_type
   True
   >>> types[1] == john_type == david_type
@@ -98,4 +96,4 @@ another (possibly persistent) object knowing about the available types.
   
   >>> t = typeManager.getType(carla_type.token)
   >>> t.title
-  u'Child'
+  'Child'
diff --git a/cybertools/typology/example/person.py b/cybertools/typology/example/person.py
index 3dd78d9..a70fbd9 100644
--- a/cybertools/typology/example/person.py
+++ b/cybertools/typology/example/person.py
@@ -1,30 +1,12 @@
-#
-#  Copyright (c) 2006 Helmut Merz helmutm@cy55.de
-#
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software
-#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-#
+# cybertools.typology.example.person
 
-"""
-Example classes for the cybertools.reporter package. These use the
-cybertools.organize package
+""" Example classes for the cybertools.typology package. 
 
-$Id$
+These use the cybertools.organize package
 """
 
 from zope.component import adapts
-from zope.interface import implements
+from zope.interface import implementer
 from cybertools.organize.interfaces import IPerson
 from cybertools.typology.interfaces import IType, ITypeManager
 from cybertools.typology.type import BaseType, TypeManager
@@ -44,9 +26,9 @@ class IAgeGroupManager(ITypeManager):
 
 # implementations
 
+@implementer(IAgeGroup)
 class AgeGroup(BaseType):
 
-    implements(IAgeGroup)
     adapts(IPerson)
 
     # IType attributes
@@ -75,10 +57,9 @@ class AgeGroupTypeInfo(AgeGroup):
         self.isChild = isChild
 
 
+@implementer(IAgeGroupManager)
 class AgeGroupManager(TypeManager):
 
-    implements(IAgeGroupManager)
-
     @property
     def types(self):
         return tuple([AgeGroupTypeInfo(flag) for flag in (True, False)])
diff --git a/cybertools/typology/tests.py b/cybertools/typology/tests.py
index 77929bf..f932134 100755
--- a/cybertools/typology/tests.py
+++ b/cybertools/typology/tests.py
@@ -1,9 +1,8 @@
-# $Id$
+# cybertools.typology.tests
 
 import unittest, doctest
 from zope.app.testing import ztapi
 from zope.interface.verify import verifyClass
-from zope.interface import implements
 
 from cybertools.typology.interfaces import IType, ITypeManager
 
diff --git a/cybertools/typology/type.py b/cybertools/typology/type.py
index 6e07290..82e9891 100644
--- a/cybertools/typology/type.py
+++ b/cybertools/typology/type.py
@@ -1,35 +1,15 @@
-#
-#  Copyright (c) 2006 Helmut Merz helmutm@cy55.de
-#
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software
-#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-#
+# cybertools.typology.type
 
-"""
-Abstract base classes for type management.
-
-$Id$
+""" Abstract base classes for type management.
 """
 
-from zope.interface import implements
+from zope.interface import implementer
 from cybertools.typology.interfaces import IType, ITypeManager
 
 
+@implementer(IType)
 class BaseType(object):
 
-    implements(IType)
-
     def __init__(self, context):
         self.context = context
 
@@ -57,10 +37,9 @@ class BaseType(object):
         return []
 
 
+@implementer(ITypeManager)
 class TypeManager(object):
 
-    implements(ITypeManager)
-
     @property
     def types(self):
         return (BaseType(None),)