{Dennis M\"uller} {An \acro{HTML/CSS} schema for \TeX\ whatsits} {I present a schema for translating \TeX\ whatsits to \acro{HTML/CSS}. This translation can serve as a basis for (very) low-level \TeX-to-\HTML\ converters, and is in fact used by the Rus\TeX\ system for that purpose. Notably, the schema is accurate enough to yield surprisingly decent (and surprisingly often, exactly right) results on surprisingly many ``high-level'' \LaTeX\ macros, which makes it adequate to use in lieu of (and often even instead of) dedicated support for macros and packages. }