I believe the big selling point is supposed to be the directives syntax of rST. I had a similar need to extend markdown, but pandoc already supports directive s

I believe the big selling point is supposed to be the directives syntax of rST. I had a similar need to extend markdown, but pandoc already supports directive syntax -- and so do some libraries, eg., the marked library, which I use to render MD as HTML in-browser rather than with pandoc. The iirc, syntax is :inline{property} and ::: block-directive {options} contents ::: It doesnt nest well, so I applied any document-level styles using the filename; but I'd imagine the yaml-style lead-in tags should be the correct way to do it.