During February 2025, this developer authored comprehensive documentation for XQuery arithmetic expressions in the HeroFan71/Xquery_Pr-ctica repository. Focusing on technical writing and documentation, they structured new material under a dedicated docs section to improve discoverability and onboarding for future contributors. Their work included a theoretical explanation of arithmetic operations in XQuery, a practical example demonstrating sum calculation, and a screenshot of code execution to provide visual clarity. Using Markdown and XQuery, they created a reusable reference that reduces guesswork for engineers and supports maintainability. No bugs were fixed this month, with ongoing maintenance tracked in the project backlog.