XML Prague 2024 here I come! Judging from the invoice I am number 11 to register. Next: Finish the paper until April 2nd!
Reading Bob DuCharme's "Maintaining Schemas for Pipelined Stages" http://www.snee.com/xml/schemaStages.html
I think it is not only about stages in a pipeline, but also about schemas for different audiences. I.e. editing a digital scholarly edition vs. publishing vs. quality assurance.