Thanks for the note on Ditaa. I didn't know it existed but I love the idea of rendering bitmaps from ASCII, especially on the web. It's like Mermaid but the original syntax is a diagram in and of itself!

Like the author writes:

There is a number of formats that are text-based (html, docbook, LaTeX, programming language comments), but when rendered by other software (browsers, interpreters, the javadoc tool etc), they can contain images as part of their content. If ditaa was intergrated with those tools (and I'm planning to do the javadoc bit myself soon), then you would have readable/editable diagrams within the text format itself, something that would make things much easier. ditaa syntax can currently be embedded to HTML.