public IContent CreateRiddle()
{
TextParagraph p = new TextParagraph();
WritingBox box = Viewport as WritingBox;
p.Content = box.Text;
return(p);
}
public bool ToViewport(IContent content)
{
TextParagraph p = content as TextParagraph;
if (p == null)
{
return(false);
}
WritingBox b = new WritingBox();
b.Text = p.Content;
Viewport = b;
return(true);
}