"JEP 467: Markdown Documentation Comments" uses my original method on 2019-02-17, It offers much more features, Extensibility, simplicity and visualization, It works with all programming languages and markup languages.

Markdown Literate programming that don't break the syntax of any programming language

https://github.com/linpengcheng/PurefunctionPipelineDataflow/blob/master/doc/markdown_literary_programming.md

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https://github.com/linpengcheng/ClojureBoxNpp