mermaid

Default Markdown format is extension-ed (called pandoc’s extended Markdown):

https://pandoc.org/MANUAL.html#pandocs-markdown

zh_cn translation (2013) https://hw0wei.github.io/posts/pandoc_markdown_语法.html

use commonmark if wanting CommonMark (markdown_strict for markdown.pl)

pandoc --list-extensions=markdown

Extensions preferred

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