The document outlines the key functions of an instructor in distance education. It discusses that an instructor acts as a facilitator to support learners. The main functions of an instructor are grouped into four categories: 1) teaching functions like highlighting important content and interacting with students, 2) reviewing student assignments and providing feedback on progress, 3) responding to student queries and helping solve problems, and 4) acting as a liaison to evaluate course effectiveness and help administrators make decisions about the system. Overall, the instructor has many responsibilities to support students and help ensure their success in distance learning courses.