Transcription: At this point, let's take a moment and talk about logical structure again. If you recall, we talked about logical structure being the definition of the order of the elements and the attributes. Now, in the Freeform model, the logical structure wasn't determined until after the entire document was read. What we're doing now is just like as if we were creating a database in Access or in SQL Server, we're defining the logical structure. So the XML processor is going to be able to look at this DTD and see the document structure for all of the elements and all the data contained therein.