I revised the Bugbooks I-II-III group into the 1977 Bugbooks V and VI, which were based upon a superior trainer, namely, the MMD-1 microcomputer, which was designed by Dr. Jon Titus and marketed by E&L Instruments. The MMD-1 was designed in early spring, and Bugbooks V and VI first appeared as typewritten, individual, chapter modules – Modules One, Two, Three, Four, Five, Six, Seven, and Supplement – which were later consolidated during summer 1977 into typewritten Bugbooks V and VI. Why