Element Type Declarations

• Define tags ("elements") in DTDs.

• Element type declaration syntax:

  <!ELEMENT element-name (content-model)>

• Use the following symbols to define content in the content models:

  ,	Strict order	Example: the book element must contain a title followed by an author, followed by a publisher followed by a year, in that order. <!ELEMENT book (title, author, publisher, year)>
  ?	Optional element	Example: the book element must contain a title followed by an author, followed by an optional publisher. <!ELEMENT book (title, author, publisher?)>

Lab 2A

More Element Numerators