Floating windows in Reaper allows you to detach specific windows from the main Reaper window, making them movable and resizable. This allows for more flexible and customizable workflows.
Floating windows can be useful for many reasons. For example, you may want to float the mixer window so that you can keep it open while working on other parts of your project. Or, you may want to float the track list window so that you can easily drag and drop tracks into your project. Floating windows can also be useful for displaying multiple windows at once, such as the mixer and the track list.