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+To create the executable arcos:
+
+- first create library libconfig.
+  Go to directory libconfig-1.4.9/lib  and give the following command
+  make all
+
+- next, return to the root directory pharcos and give the following command
+  make all
+
+Now you have the executable arcos, which needs the input files from
+directory input. ./arcos also needs an output directory. The name is given in 
+/input/default.cfg by "output_dir". Here we chose directory output. 
+
+If output does not exist, create this directory:
+make output
+
+In this directory many files for visualization will be written. For more details see the documentation:
+
+file:///?????