Worked on the cp2k/cp2k repository to enhance the clarity and accuracy of user-facing input descriptions for CP2K simulations. Focused on code refactoring and documentation improvement using Fortran, the work involved correcting typos and resolving inconsistencies in usage strings throughout the codebase. By aligning usage descriptions with their corresponding keywords, the changes reduced the risk of misconfiguration and improved the onboarding experience for new users. This update did not alter program behavior but strengthened input validation cues, ultimately decreasing user confusion and support overhead. The approach demonstrated careful attention to detail and a commitment to high-quality, maintainable documentation.