Your favourite word processor creates machine readable XML to an open spec, which can cleanly separate style from presentation through styles, much like TeX doe

Your favourite word processor creates machine readable XML to an open spec, which can cleanly separate style from presentation through styles, much like TeX does. You can build documents entirely from the keyboard as code, or use Python or build your own higher level tools. You have MathML for math, better defaults like OpenType rather than bitmap fonts, and more emphasis on handling variable screen sizes over single-size paper documents.