diff --git a/config/settings/settings.conf b/config/settings/settings.conf
index da542452..58b0ce05 100644
--- a/config/settings/settings.conf
+++ b/config/settings/settings.conf
@@ -17,7 +17,14 @@ theme=default
 volume=1.0
 
 # shell commands for generic sound driver
+# the folowing variable are substituded
+# fenrirVolume = the current volume setting
+# fenrirSoundFile = the soundfile for an soundicon
+# fenrirFrequence = the frequence to play
+# fenrirDuration = the duration of the frequence
+# the following command is used for play a soundfile
 genericPlayFileCommand=play -q -v fenrirVolume fenrirSoundFile
+#the following command is used for generating a frequence beep
 genericFrequencyCommand=playFreq -v fenrirVolume -f fenrirFrequence -d fenrirDuration
 
 [speech]