Earlier quoted context omitted.
Yikes. This looks like an amazing idea, but the online limitation kneecaps it. When I want to make diagrams graphically, I use diagrams.net. when I want to make diagrams from code, I use PIC. What else do people use? PIC works pretty well, but it has its limits and it's ancient.
could you share a link to PIC ?
An alternative implementation with good docs.