it is now possible to draw intermediate lines in the grid backgrounds, thanks to You can enable it by passing EnableIntermediateLines to true in the config file.the laser pointer diameter is now configurable in the config file, thanks to You can modify its value by changing it in the * config file ( PointerDiameter in the Board section of the config file).added a zoomBehavior parameter to test some features regarding PDF rendering performances, thanks to a new application called 'Paper' (already available for a while in some Geneva schools) has been added, thanks to François Le Cléac'h.increase performances when zooming on a PDF ( enableQualityLossToIncreaseZoomPerfs enabled by default in preferences).For older operating system versions, such as macOS 10.12, Windows 7 or Ubuntu 16.04 for example, all OpenBoard releases are available on the GitHub wiki releases page, with their features.