RoboFont consists of several windows, views and panels. The application’s interface can be organized in two different modes: Single Window and Multi-Window.
The window mode can be set in Preferences > Miscellaneous.
Single Window Mode
In Single Window mode, all windows are collected as panels of one single application window. Individual panels can be shown/hidden using the Views icons at the bottom.
In Multi-Window mode, windows are available separately and each window can be freely resized and positioned. This can be useful when working with multiple monitors or with several fonts at the same time.