Fusion is designed to be easily expandable and customizable for developers.
The Fusion core and extensions contain numerous WordPress action hooks and filters, making it possible for developers to add, remove, and modify functionality from within themes or plugins.
Fusion’s modular approach to extensions also allows developers to easily create new elements.
Some Fusion elements can be extended with additional custom layouts so that developers can add the required functionality for their sites without having to add additional elements. This helps to ensure that there are not several elements with similar names and functionality.