Worked on the tc39/ecma262 repository to streamline the ECMAScript specification by removing the unused abstract operation CreateAsyncIteratorFromClosure. Focused on documentation and specification writing, the approach centered on editorial changes that reduced unnecessary complexity and improved maintainability. By clarifying the spec and eliminating potential implementation edge cases, the work provided clearer guidance for engine implementers and lowered the risk of misinterpretation. The process involved precise commit messaging and collaboration with the TC39 team, demonstrating strong documentation hygiene. HTML was used in the workflow, and the result set a cleaner baseline for future updates and easier onboarding for new contributors.