In November 2025, Michael Langer focused on enhancing documentation for log filtering components in the apache/logging-log4j2 repository. He co-authored updates that clarified the behavior of RoutingFilter and BurstFilter, ensuring that the documentation accurately described filter composition and rate-limiting based on log event severity. Using asciidoc and technical writing skills, Michael consolidated user-facing documentation to reduce ambiguity and improve maintainability. His work, completed in collaboration with Volkan Yazıcı, addressed issues #3982 and #3983 without requiring code changes. These improvements streamlined onboarding for new developers and reduced support needs by making log filtering mechanisms more transparent and accessible.