Maria Lehtivaara enhanced the CSCfi/csc-user-guide repository by delivering targeted documentation improvements focused on FileSender usage and its command-line interface. She reorganized the CLI documentation using Markdown, refining heading structures for clarity and maintainability, and added new guidance on voucher uploads in funet.md to streamline onboarding for new users. Her technical writing and documentation skills ensured that the updated materials reduced user confusion and improved navigability, enabling faster adoption of FileSender tools. While the work did not involve bug fixes or code changes, Maria’s contributions deepened the repository’s usability and maintainability, addressing onboarding friction through clear, well-structured technical documentation.