Hello, Inspired by the “famous” TodoMVC Showcase I’ve put together a showcase for writers called - surprise, surprise - Markup & Markdown Madness! 
The first real-world showcase is the Markup language article from
Wikipedia that includes headlines, (inline) footnotes / references, definition lists and much more.
Can your markup / markdown flavor handle it? See the first samples
in kramdown, text with instructions (.texti), latex and hypertext markup language (html).
Add your sample. A commonmark or pandoc markdown sample more than welcome. Cheers.