diff --git a/code/abaqus_v6.env b/code/abaqus_v6.env
index 3bf69f853..aa86a83c0 100644
--- a/code/abaqus_v6.env
+++ b/code/abaqus_v6.env
@@ -1,7 +1,8 @@
 #
 #        MPIE CPFEM Abaqus Environment File
 #       ------------------------------------
-
+# originally taken from Abaqus ver. 6.9.1
+#
 #
 # Linux (Opteron/EM64T) Settings:
 #
diff --git a/code/concom2007r1 b/code/concom2007r1
index dd10f58d5..7ebdc1446 100644
--- a/code/concom2007r1
+++ b/code/concom2007r1
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: concom.cmn
diff --git a/code/concom2008r1 b/code/concom2008r1
index a638edd9d..a273c1f86 100644
--- a/code/concom2008r1
+++ b/code/concom2008r1
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: concom.cmn
diff --git a/code/concom2010 b/code/concom2010
index bdac0a346..70a5c506e 100644
--- a/code/concom2010
+++ b/code/concom2010
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: concom.cmn
diff --git a/code/creeps2007r1 b/code/creeps2007r1
index 31dff6093..3eee020c3 100644
--- a/code/creeps2007r1
+++ b/code/creeps2007r1
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: creeps.cmn
diff --git a/code/creeps2008r1 b/code/creeps2008r1
index 71cb7cf34..cf37f000a 100644
--- a/code/creeps2008r1
+++ b/code/creeps2008r1
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: creeps.cmn
diff --git a/code/creeps2010 b/code/creeps2010
index 4a0e0bd4d..56cca4975 100644
--- a/code/creeps2010
+++ b/code/creeps2010
@@ -1,4 +1,4 @@
-! reformated to free format
+! common block definition file taken from respective MSC.Marc release and reformated to free format
 !***********************************************************************
 !
 !        File: creeps.cmn
diff --git a/code/fftw3.f b/code/fftw3.f
index 03bacdf56..466d5f5a0 100644
--- a/code/fftw3.f
+++ b/code/fftw3.f
@@ -1,3 +1,4 @@
+! original file taken from the FFTW package ver. 3.2.2 see http://fftw.org
       INTEGER FFTW_R2HC
       PARAMETER (FFTW_R2HC=0)
       INTEGER FFTW_HC2R