Contributed detailed documentation to the pacalso-jjc/2425-2nd-cc3-1e-rpg repository by creating a Mermaid-based class diagram for the Location module. This diagram visualized the structure and behavior of the Location class, including its attributes, collections, and core methods, and was closely aligned with recent code changes. The work was delivered in Markdown, leveraging Mermaid for architecture visualization and documentation tooling. By clarifying the module’s design, the documentation improved onboarding for new contributors and supported safer refactoring. The focus on documentation quality and architectural clarity enabled more reliable future feature development and enhanced maintainability for the project as a whole.