During November 2025, Raios Catodicos contributed to the javascript-tutorial/es.javascript.info repository by clarifying documentation around negative indexing in JavaScript arrays. Focusing on technical writing and documentation best practices, Raios improved the accuracy and readability of onboarding materials, making it easier for developers to understand array semantics. The work involved editing Markdown files to refine explanations and address minor grammatical issues, resulting in clearer learning resources. Although the contribution was limited to a single feature and did not involve bug fixes, the update helped reduce potential support inquiries and strengthened the overall documentation standards for the JavaScript learning community.