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The easiest way to create HTML code indicating that the acronym CSC stands for Card Security Code is to simply include the acronym in an HTML <a> tag and an abbreviation tag (not an acronym tag):
This is the recommended code for both HTML 4 browsers and HTML 5 browsers. Some browsers, most notably IE, do not activate help when the title attribute is coded on the <abbr> tag, but they do work as expected for titles on the <a> tag. The <abbr> tag inherits its title attribute from the parent <a> tag.
If you are creating HTML code for the definition of Card Security Code, the meaning of the acronym CSC, then include a <dfn> definition tag around the <abbr> abbreviation tag and follow the entire HTML code for the hypertext link with the definition of the term:
<p>A <a href="http://www.Acronyms.net/terms/c/Card-Security-Code/" title="Card Security Code" onclick="if (confirm('CSC stands for Card Security Code')) return false;"> <dfn><abbr title="Card Security Code">CSC</abbr></a> is ...(definition of Card Security Code)....</p>
The <dfn> tag gets the term being defined from the title attribute of the <abbr> tag. The result should look like this (hovering your mouse over the CSC acronym shows the expanded meaning of the acronym):
A
CSC
is ...(definition of "Card Security Code")....
If you are creating HTML code that simply expands the acronym then indicate that it is the CSC acronymn which is being defined using an HTML <dfn> tag with a title attribute around the <abbr> tag and follow the HTML for the hypertext link with the acronym definition:
<p>When we use the acronym <a href="http://www.Acronyms.net/terms/c/Card-Security-Code/" title="Card Security Code" onclick="if (confirm('CSC stands for Card Security Code')) return false;"> <dfn title="CSC"><abbr title="Card Security Code">CSC</abbr></dfn></a> it is the abbreviation for Card Security Code.</p>
The result should look like this (hovering your mouse over the CSC acronym shows the definition):
When we use the acronym
CSC
it is the abbreviation for Card Security Code.
Acronym Vocabulary URI Declaration
For the remaining examples, the Acronym Vocabulary namespace URI needs to be declared for use with element tag names and attribute values. For an HTML web page, the beginning of the file should look like this:
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html [ <!ENTITY at "http://Acronyms.net/terms/"> <!ENTITY av "http://Acronyms.net/vocabulary/">]><html xmlns="http://www.w3.org/1999/xhtml" xmlns:av="&av;"> <head> <style type="text/css"> .hide { display: none } </style> ...
This only needs to be done once per document file.