6.3. Contents and Syntax

First, an XML header is required in all OTD documents:

<?xml version="1.0" ?>
<!DOCTYPE otd SYSTEM "http://interreality.org/otd/otd.dtd">

    

Comments may be included at any point in comment tags:

<!-- this is a comment -->

    

The root element for an OTD is otd. Within that element are elements defining various aspects of the type. Note that the elements must be included in the correct order in order to conform to the XML DTD.