If you need to translate a word or just change it (“Cart” to “Bag” or “Out of stock” to “Sold out”) you can use this useful feature that let you navigate the site and change words wherever you need. These customizations doesn’t affect you CSV files because they’re saved in the database.
In order to do it:
1.- Go to System>Developer and in Translate Inline select yes for frontend and/or admin (depending on what you need) and save.
2.- Surf the site, and change your wording by clicking in the book icon when you rollover any outlined word.
Great tutorial, thank you! This feature makes Magento extremely extensible for international sites and is so easy to configure! thanks!