diff --git a/source/Cosmos.System2/MouseManager.cs b/source/Cosmos.System2/MouseManager.cs
index e0572cd30..69d0e1c0b 100644
--- a/source/Cosmos.System2/MouseManager.cs
+++ b/source/Cosmos.System2/MouseManager.cs
@@ -37,6 +37,9 @@ namespace Cosmos.System
         FifthButton = 0b0001_0000
     }
 
+    /// <summary>
+    /// Mouse manager class.
+    /// </summary>
     public static class MouseManager
     {
         private static List<MouseBase> mMouseList = new List<MouseBase>();
@@ -103,6 +106,9 @@ namespace Cosmos.System
             }
         }
 
+        /// <summary>
+        /// Mouse manager constructor.
+        /// </summary>
         static MouseManager()
         {
             foreach (var mouse in HAL.Global.GetMouseDevices())
@@ -111,6 +117,13 @@ namespace Cosmos.System
             }
         }
 
+        /// <summary>
+        /// Mouse handler.
+        /// </summary>
+        /// <param name="aDeltaX">Mouse location change on X axis.</param>
+        /// <param name="aDeltaY">Mouse location change on Y axis.</param>
+        /// <param name="aMouseState">Mouse pressed button state</param>
+        /// <param name="aScrollWheel">unused</param>
         public static void HandleMouse(int aDeltaX, int aDeltaY, int aMouseState, int aScrollWheel)
         {
             int x = (int)(X + MouseSensitivity * aDeltaX);