This is an extended version of the OutSystemsUI sidebar, that offers the functionality of displaying a gray overlay over the rest of the application. You can also customize the sidebar's size or location on the screen with simple CSS classes. Eg: "sidebar-l", "sidebar-xl"... (check more on the documentation tab). This sidebar also works with the ESC key and with gestures on mobile devices. It is also possible to have multiple sidebars opened at the same time.