Jeroen Oonk focused on improving developer onboarding and documentation quality for the iotaledger/iota repository during December 2024. He addressed a documentation bug in the IOTA Move CTF setup guide by correcting a key grammatical error, ensuring instructions were clear and consistent with established terminology. Using Markdown and leveraging his documentation skills, Jeroen enhanced the clarity and accuracy of the setup process, which helped reduce confusion for new contributors. Although his work did not involve feature development, his targeted improvements streamlined the onboarding experience and minimized support questions, reflecting a thoughtful approach to technical communication and user-focused documentation maintenance.