During September 2025, Seoy Kim focused on enhancing project documentation for the hoodong/2025-2-PLC repository. Kim updated the 9조.md file using Markdown, aiming to improve clarity and streamline onboarding for new contributors. The work involved a minor but targeted revision, adding a duplicate line to reinforce key information without introducing any functional changes to the codebase. By concentrating on documentation, Kim leveraged skills in technical writing and knowledge transfer, ensuring that project details were more accessible and understandable. The scope of work was narrow, with a single feature commit, reflecting a focused contribution to project maintainability and team communication.