public bool ShouldBegin(UIKit.UIGestureRecognizer recognizer)
{
CGPoint translation = recognizer.LocationInView(scrollView);
return Math.Abs(translation.Y) > Math.Abs(translation.X);
}
partial void ParagraphSelected (UIKit.UILongPressGestureRecognizer sender)
{
pageView.SelectParagraphAtPosition (sender.LocationInView (pageView),
sender.State == UIKit.UIGestureRecognizerState.Ended);
}