diff --git a/ADS-B(S).md b/ADS-B(S).md
index 480bd43..98eba48 100644
--- a/ADS-B(S).md
+++ b/ADS-B(S).md
@@ -20,7 +20,7 @@ Transmit position: this is a tick box to enable the transmission of Alt. Lat. Lo
 * **Transmit speed:** This is a tick box to turn on the transmission of the speed. 
 * **Speed:** The value is selected and the rotary encoder is used to select the value 0-999kn, unit: knots.
 * **Bearing:** The value is selected and the rotary encoder is used to select the value 0-999kn. 0-359 Degrees.
-* **Vertical Rate:** The value is selected and the rotary encoder is used to select the value -4096 to +4096 ft/min in steps of 64 (following the encoding standard). It indicates the vertical rate speed of the plane (+) climbing , (-) descending. In real plane ,that Vr source data information can come from GNSS or Barometric altitude equipment. In mayhem fw , we are simulating a fix source from GNSS.
+* **Vertical Rate:** The value is selected and the rotary encoder is used to select the value -4096 to +4096 ft/min in steps of 64 (following the encoding standard). It indicates the vertical rate speed of the plane (+) climbing , (-) descending. In real plane ,that Vr source data information can come from GNSS or Barometric altitude equipment. In mayhem fw , we are simulating a fix source from GNSS. Example about climb vert. rate (+) : The [Cessna 172](https://en.wikipedia.org/wiki/Cessna_172) is a four-seat aircraft. At maximum weight it has a VY of 75 kn (139 km/h) [indicated airspeed](https://en.wikipedia.org/wiki/Indicated_airspeed)[[4]](https://en.wikipedia.org/wiki/Rate_of_climb#cite_note-4) providing a rate of climb of 721 ft/min (3.66 m/s) ).
 
 ## Squawk Tab 
 * **Transmit squawk:** This is a tick box to turn on the transmission of the [Squawk](https://en.wikipedia.org/wiki/List_of_transponder_codes) code.