Index: kupi-mk/backend/routes/orders.js
===================================================================
--- kupi-mk/backend/routes/orders.js	(revision df28b27464364207efec86888ae113a178f56d99)
+++ kupi-mk/backend/routes/orders.js	(revision d9d026eb738f3c46b6ebe79f457e8719e98730c9)
@@ -50,5 +50,5 @@
         
         if (cartResult.rows.length === 0) {
-            await client.query('ROLLBACK');
+            await client.query('ROLLBACK');           // cancel all changes
             return res.status(400).json({ 
                 success: false, 
Index: kupi-mk/frontend/src/pages/Checkout.js
===================================================================
--- kupi-mk/frontend/src/pages/Checkout.js	(revision df28b27464364207efec86888ae113a178f56d99)
+++ kupi-mk/frontend/src/pages/Checkout.js	(revision d9d026eb738f3c46b6ebe79f457e8719e98730c9)
@@ -24,5 +24,5 @@
     });
 
-    // Helper to format numbers as Macedonian denar (MKD)
+    // format numbers as Macedonian denar (MKD)
     const formatDen = (value) => {
         try {