Intended for use by teachers, instructional designers, and educational administrators, this manual provides guidelines for producing education programs for Telidon, a Canadian videotex system. An introductory chapter describes the manual's goals and intended audience, outlines cautions to be considered when writing for Telidon, and lists the names of persons experimenting with Telidon's educational potential. The second chapter provides definitions for "telematics,""videotex,""teletext," and "viewdata"; lists the basic characteristics and uses of videotex; and describes how Telidon works. Page creation principles used to create one screenful of Telidon information are outlined in the third chapter which defines "page" and "program" as related to videotex; lists and discusses basic components of an effective Telidon graphic, Telidon page components, and types of Telidon pages; describes the Telidon grid; lists and discusses seven steps in copywriting and text layout; and summarizes seven basic Telidon design principles related to type style, borders, color, highlighting, the blink function, order of display, and textures. The fourth chapter provides an instructional development context within which the user can develop Telidon programs, including a model for instructional development with Telidon and a case study which illustrates a detailed series of program design tasks. A six-item bibliography is provided. (ESR)