The document provides an introduction to computer graphics and is intended to be used as reference material to assist the high school drafting student in compiling information. A teletype machine with an acoustical coupler for telephone hookup and a time-sharing Peripherals Corporation flatbed plotter were acquired, and an illustrated programer's guide was prepared as reference for utilization of the system. The guide is intended to provide drafting students with an explanation of the techniques of plotting utilizing a G.E. 225 time-sharing computer and a time-sharing Peripherals Corporation flatbed plotter (TSP212). Section 1 provides a basic understanding of computerized drafting so that plotter output can be generated with minimal Fortran training. Available subroutines and instructions on how to use them are discussed. Six subdivisions cover: glossary of terms, using the time-sharing system, using the time-sharing plotter, subroutines, normal program structures, and sample program with plotter. Section 2 deals with the Fortran makeup of the subroutine available in the system. It provides knowledge of the structure of plotter-oriented subroutines so that, with a knowledge of Fortran, one can expand subroutines to provide a broader library of available subroutines. It is divided into areas on programing and subroutines. (Author/EC)