Draw 2D, draw 3D: MOPAC 2- and 3-dimensional graphical output written using the PHIGS graphics standard

Programs, written in graPHIGS, to display 2- and 3-dimensional contour plots of orbital density of molecular orbitals are described and included on disk. The 3D image is created by “stack plotting” 2-dimensional slices of the molecular orbital density. Features including zoom, xyz-rotation, writing pixel images to a file and superposition of stick plots of the molecule on the orbital contours.