Contributed detailed documentation for the SubList() function within the opensearch-project/documentation-website repository, focusing on event list extraction in data pipelines. The work involved authoring comprehensive usage guidance, including parameter explanations and concrete examples, all written in Markdown to ensure clarity and accessibility. Incorporated technical writing best practices and responded to code-review feedback, collaborating with multiple contributors to refine the documentation. The update to _data-prepper/pipelines/sublist.md aimed to improve developer onboarding and reduce ambiguity around integrating SubList() into pipelines. This effort emphasized clear communication and practical demonstration, supporting developers in effectively leveraging the function within their workflows.