OTBR Toolbox v3.4.0 — Several presentation windows Brings stimuli on several monitors into the normal functions and makes opening a window quieter and more honest. Highlights: - Several windows: a further initWindow opens an extra window on another monitor; showStimuli and closeWindow work on all windows, with 'Screen' on one. Tested on Windows with two monitors. - showStimuli places several images with 'x' and 'y' and draws them with one call. The old showManyStimuli and the three extra-window functions still work as wrappers. - initWindow shows no welcome image and no warning sign by default; the new entry screenVerbosity in myHardwareSetup brings them back. One failed sync test no longer affects the rest of the session. - The guide Getting started explains what a measured time means and what to use when timing has to be exact. Upgrade notes: - myHardwareSetup needs no change; old experiments keep running without the welcome image and the warning sign. - showStimuli needs exactly one position per image; otherwise it stops with an error. - initWindow on a monitor that already has a window stops with an error. - rt of getAnswer with 'wait4release' now ends at the key press. - getTime returns only the time as a double. See CHANGELOG.md [3.4.0] and docs/public_api.md for the full inventory.