This tutorial will show you how to use the Magento debugging tools to easily locate the module names and core source files.
Let’s see what advantages give us the Magento debug tools. Here you can see the default Magento store home page without any products installed. You can hardly say what each block does and how to edit it.
With the Debug tools you can see the module system name and core file.
To enable the debug tools open the Magento admin panel, go to System > Configuration page. In the Current Configuration Scope block (left column top block) select Default Store View.
Now scroll down and click the Developer link and open the Debug tab.
For the options Template Path Hints and Add Block Names to Hints uncheck the Use default checkbox and select Yes. Then click Save Config button in the top left corner.