The default value is false.
A hidden UIKit.UIView does not display and does not receive input events. It does, however, participate in resizing and layout events and remains in its UIView.Superview's list of UIView.Subviewss.
A hidden UIKit.UIView hides its descendant views in addition to hiding itself. This does not affect the UIView.Hidden property of the descendant views. Thus, a UIKit.UIView may be hidden even though its UIView.Hidden property is false.