Example code for Emacs Org Mode export

See this thread in the export section of the forum. Thanks to @jackbaty for this.

I do wonder if rather than a separate thread, this might be the first in a pinned post of export related links to threads. That might keep the number of posts in this sub-forum down and put similar topics in one listing for easier perusal. I’ve left the original topic in situ so people can ask about it and develop the idea further if needs be.