diff --git a/Level.md b/Level.md
index 6af7fce..e085a40 100644
--- a/Level.md
+++ b/Level.md
@@ -11,7 +11,7 @@ The level app is as simple as possible and allow you to monitor available level
 
 * [LNA] , [VGA] , [AMP] , [VOL] => gains, amplification on/off and volume
 * [BW] , [Mode] , [STEP] => bandwidth, demodulation and step
-* [FREQ] , [AUDIO] => Frequency adjustement, audio on/off
+* [FREQ] , [AUDIO] => Frequency adjustement, audio on/off (audio button also controls beep mode in SPEC)
 * [PEAK] => enable peak hold and timer, or disable it
 * [xXX] => set the number of columns in the live history