Colorado State University has produced this website as a hypertextbook on the subject of pathophysiology of the digestive system. In the "Introduction and Guide" link, they describe it as an education experiment that hopes to bypass the drawbacks of traditional paper and ink textbooks. The layout of this hypertextbook has a clickable table of contents, and at the bottom of each page is a helpful navigation device to show you what topic is next and what topic precedes it. Explanatory drawings or pictures accompany each concept, which makes for an excellent way to learn about the subject. Visitors should not forget to click on the "Hypertextbook" menu to see the other pathophysiology and biomedical sciences topics that are available as hypertextbooks at Colorado State University.