Hubert Hirtz enhanced the OpenRailAssociation/osrd-website repository by expanding its railway glossary, focusing on documentation quality and knowledge management. He introduced six new industry terms and implemented cross-references to the ERTMS glossary, improving both discoverability and standardization of terminology. Using Markdown for documentation, Hubert structured glossary entries to facilitate easier navigation and onboarding for new developers and domain experts. His work, delivered through a series of targeted commits, strengthened the maintainability and coverage of the glossary without requiring bug fixes. The depth of his contribution lay in aligning glossary content with industry standards and supporting efficient knowledge transfer.