An Opscan 100 optical scanner was used to score test materials received at the Southwest Regional Laboratory (SWRL) during the tryout of SWRL's Instructional Management System (IMS). This document describes the functional characteristics of the optical scanner. Directions for preparing two types of control forms processed by the scanner and sequential operating instructions for the scanner are included together with diagrams of the correct settings for the machine. Sample forms are also illustrated. (DGC)