diff --git a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
index 570d103e9..51604abe4 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
@@ -48,7 +48,14 @@ Main Function
     #include "nvs_flash.h"
     #include "esp_err.h"
 
+    ... ... ...
+    ... ... ...
+
     void app_main(void) {
+
+        ... ... ...
+        ... ... ...
+
         // Initialize internal temperature sensor
         chip_sensor_init();