Function create_windows 

pub fn create_windows(
    event_loop: &ActiveEventLoop,
    _: <(Commands<'_, '_>, Query<'_, '_, (Entity, &'static mut Window, &'static CursorOptions, Option<&'static RawHandleWrapperHolder>), Added<Window>>, MessageWriter<'_, WindowCreated>, ResMut<'_, WinitActionRequestHandlers>, Res<'_, AccessibilityRequested>, Res<'_, WinitMonitors>) as SystemParam>::Item<'_, '_>,
)

Creates new windows on the winit backend for each entity with a newly-added Window component.

If any of these entities are missing required components, those will be added with their default values.