Index: org/README.org
===================================================================
--- org/README.org	(revision efb59005c358d041b14411b06a8ec4d1efaa5f00)
+++ org/README.org	(revision 0fcd6da92f743342ff7aac6da13a618e73d0a8e9)
@@ -54,8 +54,22 @@
 #+END_SRC
 
+** Log-File
+
 The name of the logfile is ammos.log
 The logger uses the directory stored in the AMMOS_LOG_DIR environment variable.
-If this variable is not set, /tmp is used as default.
+If this variable is not set, /tmp is used as default. This might change to /var/log/
+in future versions running under GUIX system.
 If the logfile is not writable, the standard logger config is used and
 the logs go directly to console (tty).
 (see ammos_logging.conf file in this repository)
+
+** Log-Level
+
+You can change the log-Level by setting the environment variable AMMOS_LOG_LEVEL.
+To turn off logging completely set the level to 'CRITICAL'
+
+#+BEGIN_SRC shell
+export AMMOS_LOG_LEVEL=CRITICAL
+#+END_SRC
+
+If the environment variable does not exist, the logging level from ammos_logging.conf is used.