Complex sentence: Rather, it improves the understandability of the code and changes its internal structure and design, and removes dead code, to make it easier to comprehend, more maintainable and amenable to change.
Split into simpler sentences: Rather, it improves the understandability of the code, changes its internal structure and design, and removes dead code. These changes are intended to make the code easier to comprehend, more maintainable, and more amenable to change.