Zoom in: Press `Ctrl` + `+` on Windows or `Cmd` + `+` on Mac
Zoom out: Press `Ctrl` + `-` on Windows or `Cmd` + `-` on Mac
Reset zoom: Press `Ctrl` + `0` on Windows or `Cmd` + `0` on Mac
Zoom in: Use the mouse wheel while holding `Ctrl` on Windows or `Cmd` on Mac
Zoom out: Use the mouse wheel while holding `Ctrl` on Windows or `Cmd` on Mac
Zoom in and out: Use the zoom controls in the Kittl canvas interface
Zoom in and out: Pinch on a trackpad or touchscreen