Orlando Forero developed a new Object-Oriented Programming Concepts Module for the eugenp/tutorials repository, focusing on practical learning tools and robust domain modeling. He implemented CSV export functionality to enhance data portability for educational datasets, and introduced sealed classes to enforce type safety in payment processing and geometric shape components. Working exclusively in Java, Orlando applied object-oriented programming principles and unit testing to ensure the module’s maintainability and clarity. His work aligned repository code with the BAEL-9563 article, providing reusable examples that support quicker comprehension of OOP concepts. The release was stable, with no major bugs reported during the period.