That's interesting: it focused on XML/SGML formats, but gives no mention of TeX ...

necovek 43 days ago | parent | context | favorite | on: Kepler's 400-year-old sunspot sketches helped solv...

That's interesting: it focused on XML/SGML formats, but gives no mention of TeX (specifically LaTeX) that's pretty big in natural sciences and publications. It also seems trivial to reproduce with the base tools being free software and pretty small.