A TextBlock-like control with unique 3D transitions.
Inheritance: Windows.UI.Xaml.Controls.UserControl
        /// <summary>
        /// Handles changes to the CascadeIntervalString property.
        /// </summary>
        private static void OnCascadeIntervalStringChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            CascadingTextBlock target = (CascadingTextBlock)d;
            string             oldCascadeIntervalString = (string)e.OldValue;
            string             newCascadeIntervalString = target.CascadeIntervalString;

            target.OnCascadeIntervalStringChanged(oldCascadeIntervalString, newCascadeIntervalString);
        }
        /// <summary>
        /// Handles changes to the HoldDurationString property.
        /// </summary>
        private static void OnHoldDurationStringChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            CascadingTextBlock target = (CascadingTextBlock)d;
            string             oldHoldDurationString = (string)e.OldValue;
            string             newHoldDurationString = target.HoldDurationString;

            target.OnHoldDurationStringChanged(oldHoldDurationString, newHoldDurationString);
        }