My working notes for project X-Breccia \ + Draw formal graphs. \ : see ~/work/Breccia/XML/._/language_definition.brec \ / Likely simpler than Breccia’s if generic `Markup` elements are used (as planned) to model what \ is both optional and compound, while also being anonymous in the Breccia definition. \\ namespace, `data:,Breccia/Web/XML` : re `data` see https://datatracker.ietf.org/doc/html/rfc2397 - The conventional prefix is `brec`. \ Copyright © 2021-2022 Michael Allan. Licence MIT.