Inside XML

Creating a CDF File

Here's just about the simplest possible CDF file for planets.html, which I'll call planets.cdf:

<?xml version="1.0"?>
<CHANNEL HREF="http://www.starpowder.com/planets.html">
</CHANNEL>

This example just creates the most basic possible channel, based on a single Web page. The user has to click the channel to be able to download any content because we haven't set up a schedule for automatic updating yet.

As you can see, this document is a very simple one—all you need is the XML declaration and a <CHANNEL> element. The <CHANNEL> element uses a single attribute, HREF, to specify the URI of a page that will become the channel's main page, displayed in Internet Explorer when the user clicks the channel (refer to Figure 18.3