diff --git a/source/funkin/util/WindowUtil.hx b/source/funkin/util/WindowUtil.hx
index 42930570f..6e6a41641 100644
--- a/source/funkin/util/WindowUtil.hx
+++ b/source/funkin/util/WindowUtil.hx
@@ -11,17 +11,21 @@ import flixel.util.FlxSignal.FlxTypedSignal;
 #end
 class WindowUtil
 {
+  /**
+   * Runs platform-specific code to open a URL in a web browser.
+   * @param targetUrl The URL to open.
+   */
   public static function openURL(targetUrl:String)
   {
     #if CAN_OPEN_LINKS
     #if linux
-    // Sys.command('/usr/bin/xdg-open', [, "&"]);
     Sys.command('/usr/bin/xdg-open', [targetUrl, "&"]);
     #else
+    // This should work on Windows and HTML5.
     FlxG.openURL(targetUrl);
     #end
     #else
-    trace('Cannot open');
+    throw 'Cannot open URLs on this platform.';
     #end
   }
 
@@ -30,6 +34,10 @@ class WindowUtil
    */
   public static final windowExit:FlxTypedSignal<Int->Void> = new FlxTypedSignal<Int->Void>();
 
+  /**
+   * Wires up FlxSignals that happen based on window activity.
+   * For example, we can run a callback when the window is closed.
+   */
   public static function initWindowEvents()
   {
     // onUpdate is called every frame just before rendering.