     @IBInspectable var bottomInset: CGFloat = 0.0
     @IBInspectable var belowTopGuide: Bool = false
     @IBInspectable var animatePresenter = false // TODO: Determine automatically
+    @IBInspectable var fadeFirst: Bool = false // Fade out/in the first view controller, instead of moving.
     var direction: Direction = .Left // Direction to which it presents. Dismiss direction defaults to reverse.
     
     // MARK: - Private functions

        let animateFromView = animatePresenter || !isPresenting
        let toViewController = animateToView ? transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey) : nil
        let fromViewController = animateFromView ? transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey) : nil
        if toViewController != nil {
            containerView.addSubview(toViewController!.view)
            let toDirection = animatePresenter && !isPresenting ? direction.reverse : direction
            toViewController?.view.frame = dismissedFrameInContainerView(containerView, direction: toDirection)
        }
        let fromDirection = animatePresenter && isPresenting ? direction.reverse : direction
        UIView.animateWithDuration(

            delay: 0.0,
            options: UIViewAnimationOptions.CurveEaseInOut,
            animations: {
                if fadeFrom {
                    fromViewController?.view.alpha = 0.0
                } else {
                    fromViewController?.view.frame = self.dismissedFrameInContainerView(containerView, direction: fromDirection)
                }
                if fadeTo {
                    toViewController?.view.alpha = 1.0
                } else {
                    toViewController?.view.frame = self.presentedFrameInContainerView(containerView)
                }
            }
            )
        { finished in
