Thanks again for the quick response! I tried the xymatrix diagrams again, and the arrow tips are now rendering properly. I appreciate that you respond to issues very promptly. I also tried diagrams with tikz-cd and those diagrams are rendering very nicely. I’ve had a good experience with your plugin; I like its simplicity and the fact that, since you’re providing a web service, I can use a much wider set of LaTeX features. The SVG images look very nice, especially on higher resolution monitors.
