We added Interface Snapping a few weeks ago and we’re following that up with Interface Spanning. If you recall, Interface Snapping helps you snap objects to an edge or corner of its parent. Interface Spanning lets objects “span” across a parent such as the interface. This means that objects can size themselves automatically to the width or height (or both) of an interface.
The options for spanning are “Left” – from its current location to the Left border. “Right”. ”Left & Right” – from its current location to the Left border and Right border”. ”Top”, “Bottom”, and “Top & Bottom”.
If you use Spanning in conjunction with Snapping you can make more complex interfaces.