Arthur developed a Detective Code Highlighting Extension for Reveal.js within the slowkow/quarto-web repository, focusing on enhancing code snippet readability in presentations. He introduced a new configuration entry using YAML, enabling users to activate advanced code highlighting features directly through configuration management. The extension was implemented with a combination of JavaScript and front-end extension development patterns, integrating seamlessly with existing Quarto workflows. Arthur documented the feature thoroughly, ensuring clear guidance for future users and contributors. While the work was limited to one feature over a month, it addressed a practical need for consistent, automated code visualization, improving presentation quality and workflow efficiency.