Transcription: We covered some advanced XML topics in this course, the first being entities and attributes that point to external entities. We talked about how an attribute can point to a parsed entity, one that an XML processor is going to check for validity and well-formedness, and unparsed entities that aren't going to be examined by the XML processor. We also talked about the fact that to reference an unparsed entity it has to be done through an entity attribute. We also got our first look at applied XML, namely building XML applications inside of HTML and using the document object model scripting capabi ...