diff --git a/Context.h b/Context.h
index c98d6f9..f301c5e 100644
--- a/Context.h
+++ b/Context.h
@@ -96,6 +96,9 @@ typedef struct _PDO_DEVICE_DATA
     // 
     USHORT ProductId;
 
+    //
+    // Interface for PDO to FDO communication
+    // 
     VIGEM_BUS_INTERFACE BusInterface;
 
     //