troubleshooting Question

The Skinny on Schemas - what are they for?  why were they developed?  can we look at them?

Avatar of Tom Knowlton
Tom KnowltonFlag for United States of America asked on
Web Development* schemasXMLWeb Languages and StandardsWeb Browsers
4 Comments1 Solution205 ViewsLast Modified:
Some random examples:

xmlns:i="http://www.w3.org/2001/XMLSchema-instance"
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
            "http://www.w3.org/TR/html4/strict.dtd">
<!DOCTYPE html>

What are these for?  What is their origin?

Can these references be viewed?  For example, the one for HTML4 I can go to the strict.dtd page, but what about the one for HTML5?  Or are they proprietary / confidential?  How do web programmers take advantage of them?
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