One of my favourite old posts to xml-dev was one I made back in June 1998.
I talked about the distinction between syntax and semantics in markup languages but also the need to distinguish XML the language from XML the metalanguage.
But the real reason it's one of my favourites is that it was during its composition that a play on the Magritte painting The Betrayal of Images popped into my head.
In the post to xml-dev, I used the English version but I later used it as a .sig with the French wording:
<pipe>Ceci n'est pas une pipe</pipe>
