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<?php

/**
 * Class TNW_Salesforce_Model_Observer
 */
class TNW_Salesforce_Model_Observer
{

    public function orderSaveForm(Varien_Event_Observer $observer) {
		/**
		 * Magento order object
		 * @var Varien_Data_Form $_form
		 */
		$_order = $observer->getData('order');
 
        // Your custom code
    }
 
}