Introducing pikchr for Diagrams as Code

pikchr works well for diagrams that are otherwise awkward to do with the normal visual drawing tools. Brought to you by the maker of fossil and sqlite, as a means of drawing the SQL syntax diagrams. It is useful when you need to draw several similar diagrams to illustrate and idea, while being able to version the changes in a repository so that the diagrams can be regenerated later if changes are needed.