<course> <chapter url_name="Overview"> <videosequence url_name="Toy_Videos">
<html url_name="secret:toylab"/>
<video url_name="Video_Resources" youtube="1.0:1bK-WdDi6Qw"/> </videosequence> <video url_name="Welcome" youtube="1.0:p2Q6BrNhdh8"/>
<video url_name="video_123456789012" youtube="1.0:p2Q6BrNhdh8"/> <video url_name="video_123456789012" youtube="1.0:p2Q6BrNhdh8"/>
</chapter>
<chapter url_name="secret:magic"/>
</course>
