Abstract
STMML is an XML-based markup language covering many generic aspects of scientific information. It has been developed as a re-usable core for more specific markup languages. It supports data structures, data types, metadata, scientific units and some basic components of scientific narrative. The central means of adding semantic information is through dictionaries. The specification is through an XML Schema which can be used to validate STMML documents or fragments. Many examples of the language are given.