Part 12 - UIView's Clip To Bounds Property

• When unchecked (false), subviews in a UIView can extend outside the border of the parent UIView.
  Example:
  
• When checked (true), subviews will not be drawn beyond the border of the parent UIView. Subviews are clipped.
  Example:
  
• When checked (true), you cannot have a shadow on the UIView since the shadow is drawn outside the UIView's border.
• In code you refer to UIView.clipsToBounds.