Simon focused on enhancing the documentation for the SMP UART transport in the kholia/zephyr repository, addressing a subtle but impactful error in the calculation of maximum raw body size for data frames. By updating the documentation from MTU minus three to MTU minus five and clarifying the constraints for partial-final frames, Simon reduced ambiguity that previously led to setup errors for integrators. This work, carried out using reStructuredText and leveraging strong documentation skills, improved onboarding and interoperability for developers. The depth of Simon’s contribution lay in the careful analysis and correction of technical details that underpin reliable system integration.