Shakespeare's original text on the left page is complemented by a modern transmission on the right side. So far so good. However, this version is in my opinion not the best currently available: Macbeth: Modern English Version Side-By-Side with Full Original Text (Shakespeare Made Easy) provides a better implementation in modern English, as it is Shakespeare's presentation in normal everyday language and to waived to highfalutin vocabulary (which, I think, even more in the spirit of the original is).