HTML for UFO Acronym

when UFO means Unidentified Flying Object

New! Now updated with the inheritance rules for the title attribute in HTML 5

The easiest way to create HTML code indicating that the acronym UFO stands for Unidentified Flying Object is to simply include the acronym in an HTML <a> tag and an abbreviation tag (not an acronym tag):

<a href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/" title="Unidentified Flying Object"
onclick="if (confirm('UFO stands for Unidentified Flying Object')) return false;"
>
<abbr>UFO</abbr>
</a>

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 Unidentified Flying Object, the meaning of the acronym UFO, 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/u/Unidentified-Flying-Object/" title="Unidentified Flying Object"
onclick="if (confirm('UFO stands for Unidentified Flying Object')) return false;"
>
<dfn><abbr title="Unidentified Flying Object">UFO</abbr>
</a> is ...(definition of Unidentified Flying Object)....</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 UFO acronym shows the expanded meaning of the acronym):

A UFO is ...(definition of "Unidentified Flying Object")....

If you are creating HTML code that simply expands the acronym then indicate that it is the UFO 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/u/Unidentified-Flying-Object/" title="Unidentified Flying Object"
onclick="if (confirm('UFO stands for Unidentified Flying Object')) return false;"
>
<dfn title="UFO"><abbr title="Unidentified Flying Object">UFO</abbr></dfn>
</a> it is the abbreviation for Unidentified Flying Object.</p>

The result should look like this (hovering your mouse over the UFO acronym shows the definition):

When we use the acronym UFO it is the abbreviation for Unidentified Flying Object.

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.

XLink simple link

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/" title="Unidentified Flying Object"
xlink:type="simple"
xlink:href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/"
xlink:arcrole="&av;definedAt"
xlink:role="&av;definition"
xlink:title="Unidentified Flying Object"
xlink:show="new"
xlink:actuate="onRequest"
>
<abbr
xlink:type="simple"
xlink:href="&at;Unidentified-Flying-Object"
xlink:arcrole="&av;standsFor"
xlink:role="&av;term"
xlink:title="UFO - Unidentified Flying Object"
xlink:show="new"
xlink:actuate="onRequest"
>UFO</abbr></dfn>
</a>

XLink extended link

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a xlink:type="extended" href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/" title="Unidentified Flying Object">
<abbr xlink:type="resource" xlink:label="acronym">UFO</abbr>
<span class="hide" xlink:type="resource" xlink:label="verbal" xlink:title="pronunciation">u f o</span>
<span class="hide" xlink:type="resource" xlink:label="expand" xlink:title="expansion">Unidentified Flying Object</span>
<span class="hide" xlink:type="locator" xlink:label="term" xlink:role="&av;term" xlink:href="&at;Unidentified-Flying-Object" xlink:title="Unidentified Flying Object"/>
<span class="hide" xlink:type="locator" xlink:label="definition" xlink:role="&av;definition" xlink:href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/" xlink:title="Unidentified Flying Object"/>
<span class="hide" xlink:type="locator" xlink:label="finder" xlink:role="&av;reference" xlink:href="http://www.Acronyms.net/reference/u/UFO#Unidentified-Flying-Object" xlink:title="UFO - Unidentified Flying Object"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;pronounceAs" xlink:to="verbal" xlink:actuate="onLoad"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;expandsTo" xlink:to="expand"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;standsFor" xlink:to="term"/>
<span class="hide" xlink:type="arc" xlink:from="term" xlink:arcrole="&av;definedAt" xlink:to="definition" xlink:show="new" xlink:actuate="onRequest"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;foundAt" xlink:to="finder" xlink:show="new" xlink:actuate="onRequest"/>
</a>

embedded RDF metadata

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a href="http://www.Acronyms.net/terms/u/Unidentified-Flying-Object/" title="Unidentified Flying Object">
<abbr>UFO</abbr>
</a>

Printer-friendly PDF* format:

Unidentified Flying Object

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