Introduction to XML

Syd Bauman

2007-05-13/14

Markup Language

By markup language I mean a vocabulary (i.e., the set of elements that have meaning), and a grammar (i.e. how they relate to one another).

Extensible

methods of defining markup language

rules for declaring what the vocabulary of a markup language is, and for writing the rules of their grammar
e.g., rules for saying that title is a thing in my markup language, and paragraphs are not allowed in them.

syntax for expressing markup language

rules for how to inorporate a markup language into a document, a stream of text.
i.e., rules for differentiating markup from content
e.g., when you see title that means a title thing has begun