Existing wording:

Because CQL libraries can contain both public and private components, there are three main types of changes that can be made to a library. First, a library can be changed in a way that would alter the public use of its components. Second, a library can be changed by adding new components or functionality but without changing existing components. And third, a library can be changed in a way that does not impact the public use of its components at all, but only corrects or improves the originally intended functionality.

Proposed wording:

There are three main types of changes that can be made to a library. First, a library can be changed in a way that would alter the use of its components. Second, a library can be changed by adding new components or functionality but without changing how existing components are used. And third, a library can be changed in a way that does not change existing components or add new components, but only corrects or improves the originally intended functionality.