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On Tue, 2019-01-22 at 12:58 +1100, Rick Jelliffe wrote: (thank for replying!) > Isn't this just the old W3C stance that universal addressability is > the important thing (e.g. URLs)? Well, i don’t _think_ so, or, i don’t mean it that way. > If information is so important, why include PDF in the list, Because PDF documents often contain information. > which kinda is > the opposite of information organized by a schema: it is a program > organized as arbitrary functions? That's one way to look at PDF - or PostScript for that matter - it's a program that, when executed, produces (one expects) marks on a page. Although i once wrote an interactive game in PostScript. Tim Berners-Lee in his Design Documents wrote that an SVG document is a function that, when executed, produces a drawing. However, this doesn't seem to allow for other ways of using the XML that's the SVG document: i can write an XSLT stylesheet that changes it into a SQL statement that queries a database for circles of the same size. Our XML Promise, as i call it, is that any XML processor is licensed to process any XML document in any way. Similarly, it's OK to read a PDF document without executing it as PostScript. The rebranding part is that XML isn't central to this story, but is instead a central _part_ of it. Liam -- Liam Quin, https://www.delightfulcomputing.com/ Available for XML/Document/Information Architecture/XSLT/ XSL/XQuery/Web/Text Processing/A11Y training, work & consulting. Web slave for vintage clipart http://www.fromoldbooks.org/
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