Ergänzungen zu source code

README.md

@@ -18,7 +18,8 @@ collaborative work, see the AUTHOR file for details.
     * 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
-    * source_code/additional: overview on variables with their names in the 4C description and the names in the source code  
+    * source_code/additional: overview on variables with their names in the 4C description and the names in the source code
+                              flow chart of the model 4C 
     * test_data_sets: test the correct function mode of the model with complete sets of input data and control files 
     * publications: relevant publications regarding the model 4C