SUMMARY *** I have been exploring the (completely undocumented) brand new kwin tiling interface exposed in the scripts. After getting a grasp on the interface and examining the Doxygen for kwin, I attempted to write a tiling script that would automatically tile all windows to the defined layout. Unfortunately, this did not work. Further inspection of the KWin::Tile object via dumping the methods of the javascript object into strings has revealed that there is no addWindow() method for the Tile object. The windows array of the Tile object also seems to be immutable, or at least not pushable. There are several missing functions in the javascript interface, but this one (and deleteWindow(), etc.) renders the entire new tiling API almost useless. If this method happens to exist and is hidden below the surface of the API, official documentation would be very much appreciated. *** STEPS TO REPRODUCE 1. Use the script located at https://github.com/zeroxoneafour/kwin_tiling/blob/master/utils/dump_class_info.js in the plasma-interactiveconsole --kwin, substituting class_name for a tile like workspace.tilingForScreen(workspace.currentScreen).rootTile (the root tile of the current screen) 2. Open journalctl --user --no-pager -e and look at the output of the script OBSERVED RESULT There is no line with addWindow: function() { [native code] } EXPECTED RESULT A line appears with the functions addWindow and removeWindow, as is documented in the Doxygen I generated at https://zeroxoneafour.github.io/kwin_tiling/kwin_doxygen/class_k_win_1_1_tile.html SOFTWARE/OS VERSIONS Linux/KDE Plasma: 6.1.12-zen1-1-zen (64-bit) KDE Plasma Version: 5.27.1 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION I have tried calling addWindow(window) even after seeing the script output results and it is still undefined. I have called it on non-root windows, and have observed that, although the windows array of the Tile object changes based on whether a window is tiled or not, it cannot be modified with addWindow(window) or windows.push(window). All of my findings can be found at https://zeroxoneafour.github.io/kwin_tiling/