This edition of the Turing Reference Manual includes documentation for Object Oriented Turing Features, marked as [OOT only]. It contains a description of the Turing System on IBM PC's and compatibles and Apple Macintoshes as well as an alphabetic list of Turing features, accompanied by examples of how they are used. Turing is a gernal purpose, post-Pascal, programming language developed at the University of Toronto. It was designed for fast, convenient development of reliable, efficient programs. Turing has been used as the language to teach computer programming to tens of thousands of students.