What do you mean by extending the default selenium?

What do you mean by extending the default selenium? Selenium Notes, Videos, Examples By.www.laxmiroy.blogspot.com/

Extending the default selenium means enhancing or customizing or modifying the existing features of selenium class. We are reusing the existing class after adding some enhancements so as to customize the existing features to our taste and requirement. Programming languages such as JAVA provide the facility of extending/modifying the behavior of a class without having to re-write the entire class. We can create a new class that inherits the attributes and methods of another. We don't need a copy of the original source code (as is the case with many other languages) to extend the usefulness of a class/library.