Ok. This one is niche. But heh, you might enjoy a dive into this esoteric corner of the web – I certainly did. XSLT and browser support I want to get to the technical-fun bits quickly, so here's a quick rundown: XSLT is an XML language for transforming XML, including transforming it into non-XML formats, such as HTML. Browsers currently support a ~25 year old version of XSLT natively (examples coming up later). This feature is barely used. Usage is lower than features that were subsequently remo...