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During the OOXML standardization proceedings, the ISO particpants felt that there was one particular sub-technology, Markup Compatibility and Extensibility (MCE), that was potentially of such usefulness by other standards, that it was brought out into its own part. It is now IS29500:2009 Part 3: you can download it in its ECMA form here, it only has about 15 pages of substantive text. The particular issue that MCE address is this: what is an application supposed to do when it finds some markup it wasn't programmed to accept? This could be extension elements in some foreign namespace, but it could also be some elements from a known namespace: the case when a document was made against a newer version of the standard than the application.

- publishers of Flash apps have to port their apps to native Web apps if they want to run inside a Web browser going forward because the Web has moved off the PC, you can’t accessorize it with PC software anymore, WebKit is so small and light and cross-platform that it is the plug-in now, inside iPhone, iPod, Nokia, Android, iTunes and other Mac and Windows apps - publishers of Flash video have to deploy MPEG-4 H.264/AAC if they want to run inside an audio-video player (on any device) going forward, the decoder chips for this are already in EVERYTHING, from iPod to Blu-Ray to NVIDIA GPU’s Most of the world has already done both of the above, including Google and Apple. This is not the beginning of the end for Flash, it is the end of the end.

Notice he doesn’t say at all that Flash is running natively on the ARM CPU inside the iPhone. And once again, as I point out in the article above, technical problems may be solved by Adobe, but cross-platform runtime compatibility and multi-touch UI frameworks remain as serious impediments.

the direction Apple is taking in WebKit with canvas, downloadable fonts, SVG, CSS animation, CSS transformations, faster JavaScript, HTML5 audio/video embedding, exposure of multi-touch to JS and so on is precisely to create an open source alternative to the Flash runtime engine, without having to download a proprietary plugin:

As regards interoperability, in its Microsoft judgment of 17 September 2007, the Court of First Instance confirmed the principles that must be respected by dominant companies as regards interoperability disclosures. In the complaint by ECIS, Microsoft is alleged to have illegally refused to disclose interoperability information across a broad range of products, including information related to its Office suite, a number of its server products, and also in relation to the so called .NET Framework. The Commission's examination will therefore focus on all these areas, including the question whether Microsoft's new file format Office Open XML, as implemented in Office, is sufficiently interoperable with competitors' products. As for the tying of separate software products, in its Microsoft judgment of 17 September 2007, the Court of First Instance confirmed the principles that must be respected by dominant companies. In a complaint by Opera, a competing browser vendor, Microsoft is alleged to have engaged in illegal tying of its Internet Explorer product to its dominant Windows operating system. The complaint alleges that there is ongoing competitive harm from Microsoft's practices, in particular in view of new proprietary technologies that Microsoft has allegedly introduced in its browser that would reduce compatibility with open internet standards, and therefore hinder competition. In addition, allegations of tying of other separate software products by Microsoft, including desktop search and Windows Live have been brought to the Commission's attention. The Commission's investigation will therefore focus on allegations that a range of products have been unlawfully tied to sales of Microsoft's dominant operating system.