diff --git a/lib/damask/__init__.py b/lib/damask/__init__.py
index 1a759a68f..291b70a4e 100644
--- a/lib/damask/__init__.py
+++ b/lib/damask/__init__.py
@@ -1,7 +1,10 @@
+# $Id$
+
 from .environment import Environment      # only one class
 from .asciitable  import ASCIItable       # only one class
 from .config      import Material         # will be extended to debug and numerics
 from .result      import Result           # one class with subclasses
 from .geometry    import Geometry         # one class with subclasses
 from .solver      import Solver           # one class with subclasses
-from .test        import Test
\ No newline at end of file
+from .test        import Test
+from .            import core
diff --git a/lib/damask/asciitable.py b/lib/damask/asciitable.py
index 487857878..476e99591 100644
--- a/lib/damask/asciitable.py
+++ b/lib/damask/asciitable.py
@@ -1,3 +1,5 @@
+# $Id$
+
 class ASCIItable():
   '''
      There should be a doc string here  :)
diff --git a/lib/damask/config/__init__.py b/lib/damask/config/__init__.py
index 0e48106e7..137a52524 100644
--- a/lib/damask/config/__init__.py
+++ b/lib/damask/config/__init__.py
@@ -1 +1,3 @@
+# $Id$
+
 from .material import Material
diff --git a/lib/damask/config/material.py b/lib/damask/config/material.py
index 02c53f563..410b444c5 100644
--- a/lib/damask/config/material.py
+++ b/lib/damask/config/material.py
@@ -1,3 +1,5 @@
+# $Id$
+
 class Material():
   '''
      Reads, manipulates and writes material.config files
diff --git a/lib/damask/environment.py b/lib/damask/environment.py
index b53b86f28..54ba18e1a 100644
--- a/lib/damask/environment.py
+++ b/lib/damask/environment.py
@@ -1,3 +1,5 @@
+# $Id$
+
 import os,sys,string,re
 
 class Environment():
diff --git a/lib/damask/geometry/__init__.py b/lib/damask/geometry/__init__.py
index effd44cae..e7675bb58 100644
--- a/lib/damask/geometry/__init__.py
+++ b/lib/damask/geometry/__init__.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .geometry import Geometry   # only one class
 from .spectral import Spectral   # only one class
 from .marc     import Marc       # only one class
diff --git a/lib/damask/geometry/geometry.py b/lib/damask/geometry/geometry.py
index 8ad0fe891..1c65b6ce5 100644
--- a/lib/damask/geometry/geometry.py
+++ b/lib/damask/geometry/geometry.py
@@ -1,3 +1,5 @@
+# $Id$
+
 import damask.geometry
 
 class Geometry():
diff --git a/lib/damask/geometry/marc.py b/lib/damask/geometry/marc.py
index 8cfecfc9f..742be6eea 100644
--- a/lib/damask/geometry/marc.py
+++ b/lib/damask/geometry/marc.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .geometry import Geometry
 
 class Marc(Geometry):
diff --git a/lib/damask/geometry/spectral.py b/lib/damask/geometry/spectral.py
index 626c50f45..14ac10f78 100644
--- a/lib/damask/geometry/spectral.py
+++ b/lib/damask/geometry/spectral.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .geometry import Geometry
 
 class Spectral(Geometry):
diff --git a/lib/damask/result/__init__.py b/lib/damask/result/__init__.py
index b04817869..41ddf2a9e 100644
--- a/lib/damask/result/__init__.py
+++ b/lib/damask/result/__init__.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .result   import Result     # only one class
 from .spectral import Spectral   # only one class
 from .marc     import Marc       # only one class
diff --git a/lib/damask/result/marc.py b/lib/damask/result/marc.py
index 062747326..f11bb4dce 100644
--- a/lib/damask/result/marc.py
+++ b/lib/damask/result/marc.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .result import Result
 
 class Marc(Result):
diff --git a/lib/damask/result/result.py b/lib/damask/result/result.py
index 295cd8b21..27f35a250 100644
--- a/lib/damask/result/result.py
+++ b/lib/damask/result/result.py
@@ -1,3 +1,5 @@
+# $Id$
+
 import damask.result
 
 class Result():
diff --git a/lib/damask/result/spectral.py b/lib/damask/result/spectral.py
index 9fa4f0c13..f4105c5c8 100644
--- a/lib/damask/result/spectral.py
+++ b/lib/damask/result/spectral.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .result import Result
 
 class Spectral(Result):
diff --git a/lib/damask/solver/__init__.py b/lib/damask/solver/__init__.py
index eb2dd557a..39dee23de 100644
--- a/lib/damask/solver/__init__.py
+++ b/lib/damask/solver/__init__.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .solver   import Solver     # only one class
 from .spectral import Spectral   # only one class
 from .marc     import Marc       # only one class
diff --git a/lib/damask/solver/marc.py b/lib/damask/solver/marc.py
index 1dc5492e3..5f460a984 100644
--- a/lib/damask/solver/marc.py
+++ b/lib/damask/solver/marc.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .solver import Solver
 
 
diff --git a/lib/damask/solver/solver.py b/lib/damask/solver/solver.py
index 840f614a7..9740f58a8 100644
--- a/lib/damask/solver/solver.py
+++ b/lib/damask/solver/solver.py
@@ -1,3 +1,5 @@
+# $Id$
+
 import damask.solver
 
 class Solver():
diff --git a/lib/damask/solver/spectral.py b/lib/damask/solver/spectral.py
index de3213b12..505d51b5b 100644
--- a/lib/damask/solver/spectral.py
+++ b/lib/damask/solver/spectral.py
@@ -1,3 +1,5 @@
+# $Id$
+
 from .solver import Solver
 
 class Spectral(Solver):
diff --git a/lib/damask/test/__init__.py b/lib/damask/test/__init__.py
index 84c51f747..96fcfc0d1 100644
--- a/lib/damask/test/__init__.py
+++ b/lib/damask/test/__init__.py
@@ -1 +1,3 @@
+# $Id$
+
 from .test import Test      
diff --git a/lib/damask/test/test.py b/lib/damask/test/test.py
index 7f94152a9..b34f621a9 100644
--- a/lib/damask/test/test.py
+++ b/lib/damask/test/test.py
@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+# $Id$
+
 import os, sys
 import subprocess,shutil