The XHTML2 Working Group has published a W3C Recommendation of XHTML Modularization 1.1 - Second Edition. XHTML Modularization is a tool for people who design markup languages.

The XHTML2 Working Group has published a W3C Recommendation of XHTML Modularization 1.1 - Second Edition. XHTML Modularization is a tool for people who design markup languages. XHTML Modularization helps people design and manage markup language schemas and DTDs; it explains how to write schemas that will plug together. Modules can be reused and recombined across different languages, which helps keep related languages in sync. This edition includes several minor updates to provide clarifications and address errors found in version 1.1. Learn more about the HTML Activity.