"The ease with which learners can locate, access, and use information in a course is usually referred to as navigational simplicity. Navigational simplicity is achieved by using links to help learners navigate through the course content."
The design of the online environment should be uniform and easy to navigate. Students should be able to follow the flow. At my school, instructors have a set way to set up the online environment so that each course is easy to navigate and students don't need to learn the site with each instructor.