OTBR Toolbox v3.0.1 — PTB 3.0.19 font compatibility patch Compatibility patch for Psychtoolbox 3.0.19, which switched to the fontconfig library (bundled with GStreamer). Under that configuration, the Geneva font is no longer available on Windows. initWindow.m now selects Arial at 46pt on PTB >= 3.0.19 and keeps Geneva at 35pt on older PTB versions so that existing experiments render visually identically. No public-API changes. See CHANGELOG.md section [3.0.1] for full notes.