| June 15, 2011 6:28 pm

The following video is from an intensive (albeit introductory) course that I’ve been teaching on web technologies — XML, XHTML and CSS. It discusses how to validate the structure of an XML file using DocType definitions (DTDs).

DocType definitions are sets of instructions that tell a document parser whether a particular document is well formed or not. This allows for the parser to recognize potential errors.

I’m posting the video here in the hope that it will be helpful to a larger audience than just those in the course.  After all, DocTypes are an extremely useful tool.

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