26 Jun 1995 Welcome to my contribution to the exciting world of diagram macros. :^) The macros in kuvio.tex use PostScript code embedded in \special control sequences to rotate arrows from the horizontal. This means we depend on a dvi to ps translator to correctly interpret the PostScript. The translator I've used while writing this is Tomas Rokicki's excellent dvips. There is a control sequence \kuviospecial for changing the \special syntax so it may be possible to use kuvio.tex with other translators. A few features of kuvio.tex. 1. Input uses an alignment syntax not unlike other packages. 2. Rigid and flexible grids. 3. Diagram compilation for improved performance. 4. Almost every choice made by the macros in kuvio.tex is adjustable by the user. 5. A labelling scheme for typesetting material on top of diagrams or included PostScript figures. 6. Arrows can be attached to points on other arrows. 7. Since arrows are rotated from the horizontal, anything which can be typeset horizontally can be used as an arrow in a diagram. New arrow types are easily defined. 8. General purpose macros for rotation, reflection and framing. The documentation, "Typesetting diagrams with kuvio.tex", has more details. Be forewarned that dvi file previewers differ in how they handle the \special's used in kuvio.tex. On the NeXT, Rokicki's TeXview understands them just fine. (Note however that versions prior to that of February 1994 sometimes chose the wrong font in certain situations. The latest should be available by ftp from labrea.stanford.edu as /pub/texview.tar.Z.) Xdvi gets thoroughly confused. Other previewers may die agonizing deaths. Of course, one can always preview a .ps file. Ghostview does an excellent job of this under X. Anders Svensson