f="lesson02"&#32;/&gt;
&lt;itemref&#32;idref="lesson02-gl"&#32;properties="rendition:layout-pre-paginated"/&gt;</pre>
<p>It is done this way because the JavaScript code that is the demo has to have a specific size. Normally, in the
    browser, the JS code fetches the size of the innerWindow, but that doesn't work from inside an EPUB reading system
    since it normally wraps the actual page content in a iFrame or other construct. So it works much better to specify
    a fixed size page.</p>
<p>The other in