DECgraphic-11 FORTRAN Programming Manual

This manual provides detailed instructions for programmers using the DECgraphic-11 FORTRAN Graphics Package. The package consists of FORTRAN-callable subroutines that control VT11 or VS60 graphic display subsystems. The manual covers basic concepts such as coordinate systems, viewports, subpictures, and pointers. It includes comprehensive information on initializing display files, creating graphic primitives (points, vectors, and text), changing display parameters (light-pen sensitivity, intensity, flash, and line types), and managing interactive input from devices like the light pen, keyboard, and an optional pushbutton box. Furthermore, it provides specific setup instructions for different operating environments, including RT-11, RSX-11M, RSX-11D, and IAS, and details techniques for host-satellite system configurations.