diff --git a/index.h b/index.h
index 6f38cf7..98d0ea0 100644
--- a/index.h
+++ b/index.h
@@ -45,7 +45,7 @@ const char MAIN_page[] PROGMEM = R"=====(
 <script>
 var okaytogo = true;
 
-
+// Function for drawing the LED bar graphs
 function vumeter(elem, config){
 
     // Settings
@@ -172,17 +172,22 @@ setInterval(function() {
   getDATA();
 }, 500);
 
+
+// plays a beep sound
 function beep() {
     var snd = new Audio("data:audio/wav;base64,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");  
     snd.play();
 }
 
+
+// Converts a String to Integer
 function strtoint(x) {
   const parsed = parseInt(x);
   if (isNaN(parsed)) { return 0; }
   return parsed;
 }
 
+// Formats a double/float to a String with n digits after the decimal point
 function formatNum(num, separator, fraction) {
   var str = num.toLocaleString('en-US');
   str = str.replace(/\./, fraction);
@@ -191,6 +196,9 @@ function formatNum(num, separator, fraction) {
   return str;
 }
 
+
+// Takes a number, returns a String with the number
+// converted to uW, mW or Watt
 function convert_power(val){
   let ret = "0";
     if (val < 0.001){
@@ -203,6 +211,7 @@ function convert_power(val){
   return ret;
 }
 
+// returns a string of "--dBm" if the value is invalid
 function check_dbm(val){
   let ret = "0";
   if (isNaN(val)) {
@@ -214,47 +223,57 @@ function check_dbm(val){
 }
 
 
+// gets data from backend and does a lot of stuff
 function getDATA() {
   var xhttp = new XMLHttpRequest();
   xhttp.onreadystatechange = function() {
     if (this.readyState == 4 && this.status == 200) {
-      //document.getElementById("ref_led_box").style.display = 'none';
-      //document.getElementById("vswr_led_box").style.display = 'none';
+      // Split the response string and create an array
       data = this.responseText.split(";");
+      // display calculated power and dbm for FWD if voltage is between the lowest
+      // and highest value of the translation table
       if (data[15] == "0") {
         document.getElementById("FWDWatt").innerHTML = convert_power(data[0]);
         document.getElementById("FWDdBm").innerHTML = check_dbm(data[1]);
         document.getElementById("FWDVoltage").innerHTML = data[2];
+        // display LED bar graph for FWD if enabled via backend configuration
         if (data[17] == "true") {
           document.getElementById("fwd_led_box").style.display = 'inline-block';
           fwd_vu_meter.setAttribute('data-val', strtoint(data[0]*1000000));
         } else {
           document.getElementById("fwd_led_box").style.display = 'none';
         }
-      } else {
+      } else { // voltage is out out bounds
         document.getElementById("FWDWatt").innerHTML = "---";
         document.getElementById("FWDdBm").innerHTML = "---";
         document.getElementById("FWDVoltage").innerHTML = data[2];
+        // display LED bar graph for FWD if enabled via backend configuration
+        // set value to 0
         if (data[17] == "true") {
           fwd_vu_meter.setAttribute('data-val', 0);
         } else {
           document.getElementById("fwd_led_box").style.display = 'none';
         }
       }
+      // display calculated power and dbm for REF if voltage is between the lowest
+      // and highest value of the translation table
       if (data[16] == "0") {
         document.getElementById("REFWatt").innerHTML = convert_power(data[3]);
         document.getElementById("REFdBm").innerHTML = check_dbm(data[4]);
         document.getElementById("REFVoltage").innerHTML = data[5];
+        // display LED bar graph for REF if enabled via backend configuration
         if (data[18] == "true") {
           document.getElementById("ref_led_box").style.display = 'inline-block';
           ref_vu_meter.setAttribute('data-val', strtoint(data[3]*1000000));
         } else {
           document.getElementById("ref_led_box").style.display = 'none';
         }
-      } else {
+      } else { // voltage is out out bounds
         document.getElementById("REFWatt").innerHTML = "---";
         document.getElementById("REFdBm").innerHTML = "---";
         document.getElementById("REFVoltage").innerHTML = data[5];
+        // display LED bar graph for REF if enabled via backend configuration
+        // set value to 0
         if (data[18] == "true") {
           ref_vu_meter.setAttribute('data-val', 0);
         } else {
@@ -263,35 +282,43 @@ function getDATA() {
       }
       document.getElementById("VSWRValue").innerHTML = data[6];
       document.getElementById("RLValue").innerHTML = data[7];
-      document.getElementById("BANDValue").innerHTML = data[8];
-      document.getElementById("AntennaName").innerHTML = data[10];
-      document.getElementById("max_led_pwr_fwd").innerHTML = data[12];
-      document.getElementById("max_led_pwr_ref").innerHTML = data[13];
-      document.getElementById("max_led_vswr").innerHTML = data[14];
+      document.getElementById("BANDValue").innerHTML = data[8]; // displays the chosen band
+      document.getElementById("AntennaName").innerHTML = data[10]; // displays the name of the antenna
+      document.getElementById("max_led_pwr_fwd").innerHTML = data[12]; // sets the FWD LED bar max value
+      document.getElementById("max_led_pwr_ref").innerHTML = data[13]; // sets the REF LED bar max value
+      document.getElementById("max_led_vswr").innerHTML = data[14]; // sets the VSWR LED bar max value
+      // displays "--" as VSWR if the value is too high or number is invalid
       if (data[6] == "-1" || data[6] == "inf") {
         document.getElementById("VSWRValue").innerHTML = "--";
         document.getElementById("vswr_box").className = "box redbox";
       } else {
+        // VSWR is ok
         document.getElementById("VSWRValue").innerHTML = data[6];
+        // displays the VSWR box with red background if VSWR value is higher than the user configured limit
         if (parseFloat(data[6]) >= parseFloat(data[9]) || data[6] == "inf") {
           document.getElementById("vswr_box").className = "box redbox";
+          // beeps if configured to do so
           if (data[11] == "true") {
             beep();
           }
         } else {
+          // VSWR is fine, box is displayed with green background
           document.getElementById("vswr_box").className = "box";
         }
       }
+      // displays FWD box with red background if value as been replaced with "--"
       if (data[0].startsWith('--') || data[1].startsWith('--')){
         document.getElementById("fwd_box").className = "box redbox";
       } else {
         document.getElementById("fwd_box").className = "box";
       }
+      // displays REF box with red background if value as been replaced with "--"
       if (data[3].startsWith('--') || data[4].startsWith('--')){
         document.getElementById("ref_box").className = "box redbox";
       } else {
         document.getElementById("ref_box").className = "box";
       }
+      // display VSWR bar graph if enabled via backend configuration
       if (data[19] == "true") {
         document.getElementById("vswr_led_box").style.display = 'inline-block';
         swr_vu_meter.setAttribute('data-val', strtoint(data[6]-1));