• What’s the Fundamental Concept Here
  • Figure 1.1: XML is to HTML what a blueprint is to a picture. Is HTML Obsolete
  • Why Don’t They Just Add More Descriptive Tags to HTML?




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    Ceponkus, Hoodbhoy - Applied XML - Toolkit for Programmers

    Why Don’t They Just Add More Descriptive Tags to HTML?
    More descriptive tags aren’t added to HTML mainly because it’s too hard to think of a set 
    of tags that would describe every type of data in existence. It is easier to create a 
    standard method 
    of creating tags to describe your data so that you can richly represent 
    your data.
    What’s the Fundamental Concept Here?
    The fundamental concept is that XML allows you to separate data from display, and once 
    you know the structure of a data set, you can do more things with it. To draw an analogy
    think of a picture of a building versus its blueprint. With a picture, you can only see the 
    building from one angle. Feed a picture into a computer, and it won’t do very much 
    beyond displaying it as is. Feed a blueprint into a computer, and you can generate 3-D 
    views, change the layout, and try different arrangements. The view of the building from 
    the angle in the picture is, therefore, just one of many of the results that can be achieved 
    by manipulating the blueprint. Analogy:
    Information stored in an XML format is a 
    blueprint, whereas information represented in HTML is just a picture (see Figure 1.1).


    - 13 -
    Figure 1.1:
    XML is to HTML what a blueprint is to a picture.
    Is HTML Obsolete?
    HTML is a great technology. For many of us, it has changed the way we live and even 
    think by assisting what Vanevar Bush in 1945 called our 
    associative indexing
    thought 
    processes. HTML is one with the Web. Are we really going to get rid of it altogether? Is 
    no technology holy?
    First off, no technology is holy. We create technologies so that we can break them down 
    and replace them with something better. That being said, we still have a need to display 
    information, and we humans want visually appealing sites. XML is not going to change 
    our fundamental desires as humans. So, no, HTML is not doomed or obsolete. It will still 
    be around for some time. XML is not out to replace HTML; it’s there to complement it and 
    to perform a function that HTML was never designed for in the first place.

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    Why Don’t They Just Add More Descriptive Tags to HTML?

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