diff --git a/installation/Abaqus_mods/abaqus_v6.env b/installation/Abaqus_mods/abaqus_v6.env
index 968850747..590ed1b3e 100644
--- a/installation/Abaqus_mods/abaqus_v6.env
+++ b/installation/Abaqus_mods/abaqus_v6.env
@@ -1,5 +1,7 @@
 #
-#        MPIE CPFEM Abaqus Environment File
+#        DAMASK Abaqus Environment File
+#
+# $Id$
 #       ------------------------------------
 # originally taken from Abaqus ver. 6.9.1
 #
@@ -26,8 +28,12 @@ if os.path.exists(os.path.join(fortDefPath, fortCompiler)):
 else:
     fortCmd = fortCompiler
 
-# Add the flag "-free" to the compile_fortran command below to use free-
-# format FORTRAN 90 syntax.
+# "-free"         to use free-format FORTRAN 90 syntax
+# "-heap-arrays"  increase heap size
+# "-O3"           maximum optimization level
+# "-fpp"          use FORTRAN preprocessor on source code
+# "-openmp"       build with openMP support
+
 compile_fortran = (fortCmd + " -c -fPIC -auto -extend_source -w90 -w95 " + 
                    "-WB -I%I -free -heap-arrays 500000000 -O3 -fpp -openmp")