Changing html to support more exact and more advanced typographical features is a possibility. Problem: diversity and noncompliance of interpreters. XHTML mayb

Changing html to support more exact and more advanced typographical features is a possibility. Problem: diversity and noncompliance of interpreters. XHTML maybe? Some XML dialect? I can see these working if the toolchain (generators, interpreters, transformers) is tightly controlled or harshly forces compliance. Even still, I'd like my books to always look correct even if made by Microsoft eBook Publisher 2013. Layout failure on the web is a minor annoyance. Layout failure for a e-book I paid $20 for is completely unacceptable.