Is it possible to trigger an event after an order has been set to "processing"?

Which code samples will get all products sorted by 'position', assuming 'position' is of a numeric type?

Which statements are correct about Magento quotes?

Magento has the ability to run multiple stores from the same database. After adding the new store from System -> Manage Store, what is the correct code to add to the htaccess file to make Magento automatically load the new store?

Which will save a custom session variable in Magento?

Which will get information ('customer_referrer_id') from a currently logged-in admin user?

Add another attribute to Magento products.

What database can Magento use?

Is it possible to install magento in a local server and access it in to another system in the same network.

Which inventory API allows you to retrieve the list of stock data by product IDs?

Adding Text and fields to the order fulfillment/invoice email or forwarding customer-facing email.