Santiago Sugrañes focused on improving documentation quality for the heig-vd-dai-course/heig-vd-dai-course repository, delivering a comprehensive cleanup of course materials and updating the student roster. He refactored multiple Markdown files, including README and PRESENTATION.md, to enhance clarity, consistency, and maintainability, addressing issues such as HTML escaping in titles and standardizing class IDs and student names across modules. Santiago’s work emphasized documentation hygiene and careful attention to rendering correctness, leveraging Markdown and HTML within the documentation context. While the scope was limited to one feature over a month, the changes contributed to clearer onboarding and more reliable documentation for future contributors.