Invisible XML (ixml) is a language and process for identifying structure in documents. Invisible markup allows users to exploit the implicit structures in documents without the need for explicit markup. Since the release of the ixml standard in 2022, we have seen a steady increase in the use of ixml, as well as many interesting conference presentations about the language. The community group felt the time was right for an event exclusively dedicated to invisible markup.
The Symposium was held on two afternoons, Thursday/Friday 26/27 February 2026.
Timeline
- Call for presentations open through 15 December 2025.
- Preliminary program announced, 17 December 2025.
- Symposium schedule announced, 3 February 2026.
- Slides published beginning 4 March 2026.
Code of conduct
Slides
The organizing committee will publish speaker slides on this page as they are provided. Videos will be published when post-production is complete.
Day one, Thursday, 26 February
- Steven Pemberton, Introductory remarks
- Alan Painter, Some notes about implementing ajp for RFC9535 with CoffeeSacks et al [PDF, PPTX]
- Fredrik Öhrström, Improvements to ixml to overcome the lack of tokenizer
- Steven Pemberton, The syntax of credit card numbers
- John Lumley, An iXML grammar is also an iXML sentence [PDF, ODP]
- Wendell Piez, Overlap meets Invisible XML [online]
- Bethan Tovey-Walsh, Shoulda, coulda, woulda - getting the most out of iXML
- Mary Holstege, IXML in self-publishing
Day two, Friday, 27 February
- Norm Tovey-Walsh, A proposal for modularity in Invisible XML grammars [online, paper]
- Fredrik Öhrström, Practical uses of ixml
- Sheila Thomson, Some lessons learned
- Hans-Dieter Hiep, TAGs for ixml
- Michael Simons et al., Invisible XML in the digital humanities classroom and toolkit [online]
- G. Ken Holman, Configuring text conversion environments employing iXML [PDF]
- Nico Verwer, Between Invisible XML and visible XML [PDF]