Martin Sjölund worked on improving logging namespace hygiene in the OpenModelica/OpenModelica repository by introducing a consistent OMC_ prefix for all logging symbols. Using C and C++, he refactored the logging mechanisms and scoped certain symbols as static, which reduced namespace pollution and minimized the risk of conflicts with third-party code. His changes laid the groundwork for safer external C interactions and enhanced maintainability, without altering the public API surface. The work demonstrated a thoughtful approach to code quality and refactoring, focusing on long-term maintainability and integration safety within the build system and core codebase over the course of the month.