Instructional technology, defined as the application to instruction of a primary or underlying science, refers in the present context to the science of human behavior with regard to problems of instruction and learning. Instructional films, though of a very high technical standard, and though widely used nowadays, are seldom constructed along the principles of programed instruction. A well-constructed programed film will exercise a high degree of internal control over the learner's responses. The learner is made to behave in a specifically prescribed manner throughout the course of, and at the end of the film, by the use of the instructional specification (IS) and through the IS, by the program outline. The components of the IS are terminal behavior, instructional cue, elicitors, and stimulus limits. This paper provides a blue-print for preparing an IS, and is one of five monographs that make up a demonstration kit for producing a self-instructional film. (GO)