diff --git a/README.md b/README.md
index 87b1cefe94dc7cf91bbc3010babb662e53c061ae..44c44623908277093c6c2294f368467b26d39052 100644
--- a/README.md
+++ b/README.md
@@ -10,19 +10,23 @@ Potsdam Institute for Climate Impact Research. All files are licenced under
 BSD 2-Clause License, see the LICENCE file for details. The 4C model is a 
 collaborative work, see the AUTHOR file for details.
 
-For information about the 4C model see "about".
-For a basic introduction and installation see the file .... 
-For manual on "how to start" see the directory manuals. 
-For background information documents see the directory description/additional. 
-To test the propper working of the functions of the model see the directory data/4C testing. 
-All relevant publications regarding the model see the directory publications.
+- See http://www.pik-potsdam.de/4c/ for information about 4C and the manual
+- For the model description see 4C_description.pdf in the directory descriptions
+- The directory executables contains three executables with self-explanatory names
+- The directory source_code contains the corresponding source codes in three subdirectories with self-explanatory names
+- Additional information can be found in following directories:
+    * manuals: about "how to start" and " generate exe"  
+    * descriptions/additional: background information documents 
+    * descriptions/Fact_sheets: short summary of the model in English and German
+    * test_data_sets: test the correct function mode of the model with complete sets of input data and control files 
+    * publications: all relevant publications regarding the model 4C
 
 The source code is distributed via a git repository at: 
 https://gitlab.pik-potsdam.de/foresee/4C and is ready to use.
 The code language is Fortran90. Since the model development is
 finished, there is no further development and no further support in model 
 download, setup, development or application. No merge or other development 
-requests will be handeled. There fore there are no code style recommendations or
+requests will be handeled. Therefore there are no code style recommendations or
 instructions on how to create source code ammendments.
 
 
diff --git a/descriptions/4C_ description.pdf b/descriptions/4C_ description.pdf
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diff --git a/test_data_sets/4C_testing/generreg.par b/test_data_sets/generreg.par
similarity index 100%
rename from test_data_sets/4C_testing/generreg.par
rename to test_data_sets/generreg.par
diff --git a/test_data_sets/4C_testing/species.par b/test_data_sets/species.par
similarity index 92%
rename from test_data_sets/4C_testing/species.par
rename to test_data_sets/species.par
index 6c6fcaf9e8cffc38b599f61e0bb318405fe2c425..404a181dfe2084ce3935e186a56043d2215cd683 100644
--- a/test_data_sets/4C_testing/species.par
+++ b/test_data_sets/species.par
@@ -1,20 +1,4 @@
 !  4C Species Parameter File
-!       31.01.17 pl Picea abies: pss 0.05 -->0.022 Longuetaud, F. etal 2006
-!       18.05.16 Su k_opm_fol, k_syn_fol fuer Mistletoe geschaetzt
-!       10.03.16 ck Added parasite Mistletoe (Viscum album austriacum)
-!       29.06.15 Su Eucalyptus gl. und gr. k_opm_fol, k_syn_fol, k_opm_frt, k_syn_frt   
-!       10.07.14 pl Douglasie Korrektur pheight1, pheight2
-!       09.07.14 pl Eucalyptus grandis und globulus parametrisiert
-!	11.04.13 Su Kiefer: k_opm_fol 0.02 --> 0.05, k_syn_fol 0.5 --> 0.1, 
-!	                    k_opm_frt 0.035 --> 0.05, k_syn_frt 0.5 --> 0.1 
-!       06.11.12 pl Robinie: Anpassung durch Engler: 
-!       08.03.12 pl Robinie: phrhos= 0.00069, alphac= 0.42
-!       06.04.11 Su Douglasie: k_opm_fol, k_opm_syn, k_opm_frt geaendert
-!       02.04.09 Su Picea: k_opm_fol, ..._syn, k_opm_frt, ..._syn geaendert
-!       07.11.08 Su neue Struktur (ab Version v1.0)
-!       05.11.08 mg  hinzufügen von 10 neuen Parametern für Wurzelmodell
-!       04.11.08 PL Robinie parametrisiert
-!       29.10.08 pl  Douglasie Korrektur pheight1, pheight2
 ! contains the following data:
 ! with * marked parameters are sensitive
 !
@@ -228,10 +212,3 @@ ph_min          3.75      2.25      2.25      3.75      2.25      2.25      2.25
 v_growth           1         1         1         1         1         1         1         1         1         1         1         1         1         5           -99
 
 
-
-nur_Info:
-cnr_fol           25        22        25        25        25        25        25       -99       -99        25
-cnr_frt           25        20        25        22        22        25        25       -99       -99        25
-cnr_crt           25        20        25        22        22        25        25       -99       -99        25
-cnr_tbc          125        63       100        63        63       100       100       -99       -99        25
-cnr_stem         250       190       250       130       130       250       250       -99       -99        25
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diff --git a/test_data_sets/4C_testing/test_ini/site02.sod b/test_data_sets/test_ini/site02.sod
similarity index 98%
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index 0b6181f9dd41fd237f3458658d09e4fc1dfce1f8..0f29bf8236148fe2e764e9749e7f67b8eb4a9a2a 100644
--- a/test_data_sets/4C_testing/test_ini/site02.sod
+++ b/test_data_sets/test_ini/site02.sod
@@ -1,4 +1,4 @@
-!  site02 (SOil Profile)																
+!  site02 (Soil Profile)																
 New Version		14/01/15														
 10		Longitude														
 50		Latitude														
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