Currently https://quarto.org/docs/authoring/markdown-basics.html has no mention of Raw Block and Raw Inline syntax  based on https://pandoc.org/MANUAL.html#extension-raw_attribute

cwickham
2023-01-19T13:54:45Z
cderv
documentation
v1.4
open
Document raw block syntax in our Basic Markdown Guide
https://github.com/quarto-dev/quarto-cli/issues/4500