Sofia nodded and began to research the issue. After a few hours, she returned with a solution. "Carlos, I think I found a way. We can offer a free PDF version of the textbook, but with a few limitations. We can watermark the document and add a disclaimer that it's for personal use only. That way, readers can still access the material, but we can protect our rights."

Carlos Correia, a seasoned financial manager, sat at his desk, staring at the stack of financial reports in front of him. He was working on the 9th edition of his renowned financial management textbook, and he wanted to make sure that this version was the best one yet.

Carlos smiled, relieved. "That's a great solution, Sofia. Let's do it."

And so, the 9th edition of Carlos Correia's financial management textbook became available as a free PDF, with the added protections that Carlos had requested. The response was overwhelming – readers from all over the world downloaded the document, and the feedback was glowing.

He called Sofia into his office and discussed the issue. "We need to make sure that our intellectual property is protected," he said. "But at the same time, I want to make sure that our readers have access to the best possible resources. Can you look into this and see if there's a way to make the PDF available while still respecting our rights?"