I need to address possible concerns. For example, legal issues with using pirated software. It's important to emphasize that using unlicensed SAS can be problematic, so maybe the post can suggest that this is for educational purposes or for those who have access to a license. Also, compatibility with modern OSes might be an issue. SAS 9.1.3 is quite old, so it might not run well on the latest Windows versions. Suggesting compatibility modes or virtual machines could be helpful.