 import UIKit
 
 /// Subclass of `UIViewController` that displays a single acknowledgement.
-public class AcknowViewController: UIViewController {
+open class AcknowViewController: UIViewController {
 
     /**
      The main text view.
      */
-    public var textView: UITextView?
+    open var textView: UITextView?
 
     /**
      The represented acknowledgement.

    /**
     Creates the view that the controller manages.
     */
    override public func loadView() {
        let textView = UITextView(frame: CGRect.zero)
        textView.alwaysBounceVertical = true
        textView.font                 = UIFont.systemFont(ofSize: 17)


     - parameter animated: If `YES`, the view is being added to the window using an animation.
     */
    open override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        if let textView = self.textView {
            textView.contentOffset = CGPoint(x: textView.contentInset.top, y: 0)
