[thelist] The future of XML

martin.p.burns at uk.pwcglobal.com martin.p.burns at uk.pwcglobal.com
Wed Oct 17 04:24:35 CDT 2001


Memo from Martin P Burns of PricewaterhouseCoopers

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Not quite, Pete.

CSS is the presentation layer, HTML is the structural & semantic layer,
XML is the data layer.

That's why standards compliant HTML uses <strong>, not <b> - the markup
tells you what the content *means*, not what it looks like. Right back from
HTML3.2 (not sure about earlier), the standards have clearly said that
UAs *may* display <b> and <strong> as bold, but may choose not to.

That's why you mark up document structure as
<h1>heading 1</h1>
<h2>subheading</h2>
etc
rather than
<font size="16px" color="black" face="Geneva, Arial, sans-serif">heading
1</font>
<font size="14px" color="black" face="Geneva, Arial, sans-serif">heading
2</font>


Cheers
Martin




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Subject:  RE: [thelist] The future of XML


XML is a data description language, describing what a thing *is*
Strictly, HTML is a presentation language, describing how a thing should
*look* (or behave, in the case of active content)

The two are complementary rather than competative.



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