In 1972 there were at least six different course authoring languages in use in Canada with little exchange of course materials between Computer Assisted Learning (CAL) centers. In order to improve facilities for producing "transportable" computer based course materials, a working panel undertook the definition of functional requirements of a user oriented programming language for computer aided learning applications. The introduction of this report, which outlines the scope, is followed by areas of application of the language and its general properties. Levels of implementation include: display information, accept user input, process user input, identify locations in program, sequence execution, record and manipulate data, user tools available within the language, coding conventions, and a guide to preparation of detailed specification and implementation. This report was prepared by a Working Committee on CAL Languages for the National Research Council's Associate Committee on Instructional Technology; the appendix lists documents presented to the working panel. (VT)