In the next few pages we attempt to concisely review the topics covered in this textbook. This summary should assist you in preparing for a final examination in a process control course, for example. It also serves the purpose of providing a quick way of helping you determine what topics you would like to understand better. In the next section these topics are reviewed in the chronological order presented in the text. In the subsequent section a concise review of the material presented in the modules is presented.