Creating a 3D book-shaped application with speech and ink using WPF 3.5 A text editor with interactive 3D, speech and ink using WPF 3.5. For this article, I've developed a 3D book-shaped interface for a text editor and reader. In this first iteration, the book opens and closes, you can type in the left page and scribble in the right page. The left page, when double-clicked, is read using the Windows speech synthesis engine and the right page can switch modes between ink and eraser with the right mouse button. The text editor also has integrated English spell-checking.