This is an another excellent feature especially for stores with multiple languages. You may not want different language content for product attributes and you want the same content for all product attributes. But it will be hectic task to copy same values to all the language attributes fields.
This extension can save your time. All you have to do is click on the “Copy Same content to other languages” checkbox
When you select the highlighted checkbox, you will only see the only language field for each attributes and when you click on save button the same value will be copied to the other languages of the respective attribute.