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Subject: DocBook 5 embedded HTML iframe for YouTube with 'allowfullscreen'?
Dear all, the standard HTML embed code for YouTube videos includes an attribute setting 'allowfullscreen' , for example: <iframe width="560" height="315" src="https://www.youtube.com/embed/KySxOW7vVUc" frameborder="0" allowfullscreen></iframe> I included this in a DocBook 5 XML file using an external file and the ?dbhtml-include processor instruction. [see: Stayton book http://www.sagehill.net/docbookxsl/InsertExtHtml.html] The processor (Saxon 9) will not accept the bare 'allowfullscreen' as it expects attribute settings to be in the form 'attribute = value'. So I just modified the embed HTML to ' allowfullscreen = "true" ' and it now processes and works correctly. (Likewise, SlideShare embed HTML includes three attributes ' allowfullscreen webkitallowfullscreen mozallowfullscreen'.) Does anyone know the definitive answer about this? Thx Phillip