The Extraordinary Flexibility of META and LINK Tag Element Example

The

Upgrades and Downgrades

I have created a small cluster of demonstration files to show the various upgrades possible as replacements for the <XMP> and <LISTING> elements contained in this <LISTING> demonstration file and this <XMP> demonstration file, showing a list of alternatives to using these elements.

Possible downgrades are:

• None - Both of these tags are ancient and have no specific equivalent in anything previously acceptable to any HTML machine.

Possible upgrades are:

• Proprietary extensions - In all of their official declarations in the standards, <XMP> and <LISTING> are never reported to have any attributes. However in many current browser implementations which have maintained them for backward compatibility, the style, accessibility, event, and language attributes have been observed for these elements. Furthermore, an "ALIGN" attribute has been noted for the Opera browser, along with "HEIGHT" and "WIDTH" for the <LISTING> element.

This file, "metalink.html," is HTML 2.0 Strict Level 1 compliant.
The <PRE STYLE="font-size: 62%"> demonstration file "listind6.html" is HTML 4.01 Strict compliant.

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