update: add some commenting

app/lib/pages/default_page.dart

@@ -53,7 +53,7 @@ class _DefaultPageState extends State<DefaultPage> {
     // Load marker data from server
     loadMarkerList();
 
-    // Schedule fetchMarkerTemplate to run periodically based on fetchInterval const
+    // Schedule fetchMarkerData to run periodically based on fetchInterval from consts
     const Duration interval = Duration(minutes: fetchInterval);
     _timer = Timer.periodic(interval, (timer) {
       fetchMarkerData();
@@ -72,7 +72,7 @@ class _DefaultPageState extends State<DefaultPage> {
   Widget build(BuildContext context) {
     return MaterialApp(
       home: Container(
-        decoration: const BoxDecoration(
+        decoration: const BoxDecoration( // Set background color
           gradient: LinearGradient(
             begin: Alignment.topCenter,
             end: Alignment.bottomCenter,
@@ -82,10 +82,10 @@ class _DefaultPageState extends State<DefaultPage> {
         child: Scaffold(
           backgroundColor: Colors.transparent,
           appBar: AppBar(
-            title: Text('IceMap'),
+            title: const Text('IceMap'),
           ),
           body: ListView(
-            children: [
+            children: [ // Add main widget
               MapContainerWidget(markerList: markerList),
             ],
           ),

app/lib/pages/marker_handler/get_markers.dart

@@ -26,6 +26,6 @@ Future<List<Measurement>> fetchMarkerData() async {
     }
   } catch (e) {
     print('Error: $e');
-    throw Exception('Failed to connect to the server. Please check your network connection');
+    throw Exception('failed to connect to the server. Please check your network connection');
   }
 }

app/lib/pages/widgets/map_widget.dart

@@ -36,7 +36,7 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
             const SizedBox(height: contPadding),
             ClipRRect(
               borderRadius: BorderRadius.circular(20),
-              child: Stack(
+              child: Stack( // Stack quick view on top of map
                 children: [
                   SizedBox(
                     width: screenWidth * boxWidth,
@@ -47,7 +47,7 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
                         zoom: 9.0,
                       ),
                       children: [
-                        TileLayer(
+                        TileLayer( // Map from OpenStreetMap
                           urlTemplate: "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
                           subdomains: const ['a', 'b', 'c'],
                         ),
@@ -55,7 +55,7 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
                           polygons: widget.markerList.map((Measurement measurement) {
                             return Polygon(
                               points: measurement.cornerList.map((Corner corner) {
-                                // Match corners to LatLng objects
+                                // Map corners to LatLng objects
                                 return LatLng(corner.latitude, corner.longitude);
                               }).toList(),
                               /*onTap: () {
@@ -71,7 +71,7 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
                       ],
                     ),
                   ),
-                  Positioned(
+                  Positioned( // Quick view box layered over map
                     bottom: 10,
                     right: 10,
                     child: ClipRRect(