Tibere Borel developed a fullscreen-aware machine switching feature for the microsoft/PowerToys repository, enabling users to configure automatic device switching behavior when fullscreen applications are active. He implemented this functionality using C#, XAML, and the Windows API, introducing an ignore-list and new UI controls to give users granular control over cross-machine interactions. In parallel, Tibere enhanced documentation in MicrosoftDocs/windows-dev-docs, clarifying Mouse Without Borders’ behavior with fullscreen apps and detailing ignored executables. His work focused on configuration management, UI development, and documentation, resulting in improved user workflows, reduced interruptions during fullscreen use, and clearer guidance for both end-users and support teams.