QuickTime takes advantage of SMIL's extensibility by adding
tags that you can use to enhance a presentation. To make use of
QuickTime extensions in your presentations, you have to add the
special binding otherTagString in
the WOSMILDocument element. Then you must bind it to an instance
variable that provides the appropriate string.
otherTagString binding.otherTagString to
an instance variable of type String named qtNameSpace.qtNameSpace to "xmlns:qt=\"http://www.apple.com/quicktime/resources/smilextensions\"".QuickTime does not actually access the URL; it is used only to uniquely identify the QuickTime SMIL extensions. For more information, see http://www.apple.com/quicktime/authoring/qtsmil.html.