--- a/README.md	Fri Jun 05 14:06:28 2020 +0200
+++ b/README.md	Fri Jun 05 14:23:41 2020 +0200
@@ -1,28 +1,34 @@
-Calculation of pollarization correction factors for atmospheric lidar system, developed by Volker Freudenthaler (LMU).
+Calculation of polarisation correction factors for atmospheric lidar system, developed by Volker Freudenthaler (LMU, Munich, Germany).
 
 # Theory
 The theoretical basis of the script is described in detail in :
 
->Freudenthaler, V.: About the effects of polarising optics on lidar signals and the Δ90 calibration,
+Freudenthaler, V.: 
+About the effects of polarising optics on lidar signals and the Δ90 calibration,
 Atmos. Meas. Tech., 9, 4181-4255, doi:10.5194/amt-9-4181-2016, 2016
->http://www.atmos-meas-tech.net/9/4181/2016/
+http://www.atmos-meas-tech.net/9/4181/2016/
 
 Additional information can be found in:
 
->Bravo-Aranda, J. A., Belegante, L., Freudenthaler, V., Alados-Arboledas, L., Nicolae, D., Granados-Muñoz, M. J.,
+Bravo-Aranda, J. A., Belegante, L., Freudenthaler, V., Alados-Arboledas, L., Nicolae, D., Granados-Muñoz, M. J.,
 Guerrero-Rascado, J. L., Amodeo, A., D'Amico, G., Engelmann, R., Pappalardo, G., Kokkalis, P., Mamouri, R.,
 Papayannis, A., Navas-Guzmán, F., Olmo, F. J., Wandinger, U., Amato, F., and
-Haeffelin, M.: Assessment of lidar depolarization uncertainty by means of a polarimetric lidar
-simulator, Atmos. Meas. Tech., 9, 4935-4953, doi:10.5194/amt-9-4935-2016, 2016.
->http://www.atmos-meas-tech.net/9/4935/2016/
+Haeffelin, M.: 
+Assessment of lidar depolarization uncertainty by means of a polarimetric lidar simulator, 
+Atmos. Meas. Tech., 9, 4935-4953, doi:10.5194/amt-9-4935-2016, 2016.
+http://www.atmos-meas-tech.net/9/4935/2016/
 
 # Use
 To run the script you need to:
 
+1. Read the information in the script header. 
+
 1. Create a file describing your system settings and parameters. You can find an example file in the "system_settings"
    folder. Give a descriptive name and save it in the "system_settings" folder.
 
-2. Open the "lidar_correction_ghk.py" file, and set the variable InputFile to the filename you chose in step 1.
+2. Edit the "GHK_0.9.8e5_Py3.7.py" or the current script file with an ASCII editor and set the variable InputFile below line 281 to the filename you chose in step 1.
 
-3. Run "python lidar_correction_ghk.py"
+3. Run the script "GHK_0.9.8e5_Py3.7.py" (or the current version).
 
+Note: _0.9.8e5 in the script filename is the script version and _Py3.7 indicates that it is tested with Python 3.7. 
+