Not really. SGML (and XML) are "meta-markup languages", meaning you declare your vocabulary yourself or use a ready-made one. There is in fact a simple general-

Not really. SGML (and XML) are "meta-markup languages", meaning you declare your vocabulary yourself or use a ready-made one. There is in fact a simple general-purpose vocabulary declared in an ISO/IEC 8879:1986 appendix consisting of generic paragraph and heading elements, but it's not widely used in that form.