Comment data collection section

js/reiseauskunft.js

@@ -105,12 +105,15 @@ var connection_result_observer = new MutationObserver((mutations) => {
           data[i]["from"] = {}
           data[i]["to"] = {}
 
+          // Depature station name
           var relation_from = relation.querySelector("td.station");
           data[i]["from"]["station"] = relation_from.innerText;
 
+          // Arrival station name
           var relation_to = relationend.querySelector("td.station");
           data[i]["to"]["station"] = relation_to.innerText;
 
+          // Departure time & current estimation
           var relation_departure = relation.querySelector("td.time");
           var relation_departure_list = relation_departure.firstChild.textContent.trim().split(" ");
           data[i]["from"]["time"] = relation_departure_list[1];
@@ -120,6 +123,7 @@ var connection_result_observer = new MutationObserver((mutations) => {
             data[i]["from"]["time_current"] = relation_departure_current.innerText.trim();
           }
 
+          // Arrival time & current estimation
           var relation_arrival = relationend.querySelector("td.time");
           var relation_arrival_list = relation_arrival.firstChild.textContent.trim().split(" ");
           data[i]["to"]["time"] = relation_arrival_list[1];
@@ -129,36 +133,44 @@ var connection_result_observer = new MutationObserver((mutations) => {
             data[i]["to"]["time_current"] = relation_arrival_current.innerText.trim();
           }
 
+          // Departure platform
           var relation_platform = relation.querySelector("td.platform");
           data[i]["from"]["platform"] = relation_platform.innerText;
 
+          // Arrival platform
           var relation_to_platform = relationend.querySelector("td.platform");
           data[i]["to"]["platform"] = relation_to_platform.innerText;
 
+          // Travel products
           var relation_products = relation.querySelector("td.products");
           data[i]["products"] = [];
 
+          // Fetch all products for this travel
           var relation_trains = relation_products.querySelectorAll("span a");
           relation_trains.forEach((train, j) => {
             data[i]["products"][j] = {};
+
+            // Prodcut details
             data[i]["products"][j]["product"] = null;
             data[i]["products"][j]["train_number"] = null;
             data[i]["products"][j]["line_name"] = null;
 
             var name_list = train.innerText.trim().replace(/  +/g, ' ').split(" ");
 
-            // Train name in format "STB 12 (23561)"
+            // Product name in format "STB 12 (23561)"
             if(name_list.length == 3 && name_list[2].charAt(0) == '(' && name_list[2].charAt(name_list[2].length-1) == ')') {
               data[i]["products"][j]["product"] = name_list[0];
               data[i]["products"][j]["train_number"] = name_list[0] + " " + name_list[2].substring(1, name_list[2].length-1);
               data[i]["products"][j]["line_name"] = name_list[0] +  " " + name_list[1];
             }
+            // Product name in format "ICE 234"
             else {
               data[i]["products"][j]["product"] = name_list[0];
               data[i]["products"][j]["train_number"] = name_list[0] + " " + name_list[1];
             }
           });
 
+          // Travel information
           var relation_items = relation.querySelectorAll("td");
           var relation_info = relation_items[relation_items.length-1];
           data[i]["info"] = relation_info.innerText;