Worked on the hoodong/2025-2-PLC repository, focusing exclusively on enhancing project documentation. Updated the 1조.md file using Markdown, adding detailed student information such as university, major, residence, and hometown, while also improving formatting with clearer line breaks and a welcoming Hello line. The approach emphasized content clarity and data completeness, supporting easier onboarding and more accessible information for contributors and reviewers. Maintained a disciplined commit history to ensure traceability and transparency of documentation changes. No functional code or bug fixes were introduced during this period, as the work centered on documentation quality and maintainability using strong documentation skills.