HyTime

Hypermedia/Time-based Structuring Language: an emerging

ANSI/ISO Standard from the SGML Users' Group's Special

Interest Group on Hypertext and Multimedia (SIGhyper). A

hypermedia extension of SGML.

["The HyTime Hypermedia/Time-based Document Structuring

Language", S. Newcomb et al, CACM 34(11):67-83 (Nov 1991)].