HTML for PNG Acronym

when PNG means Portable Network Graphics

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 PNG stands for Portable Network Graphics 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/p/Portable-Network-Graphics/" title="Portable Network Graphics"
onclick="if (confirm('PNG stands for Portable Network Graphics')) return false;"
>
<abbr>PNG</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 Portable Network Graphics, the meaning of the acronym PNG, 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/p/Portable-Network-Graphics/" title="Portable Network Graphics"
onclick="if (confirm('PNG stands for Portable Network Graphics')) return false;"
>
<dfn><abbr title="Portable Network Graphics">PNG</abbr>
</a> is ...(definition of Portable Network Graphics)....</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 PNG acronym shows the expanded meaning of the acronym):

A PNG is ...(definition of "Portable Network Graphics")....

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

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

When we use the acronym PNG it is the abbreviation for Portable Network Graphics.

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/p/Portable-Network-Graphics/" title="Portable Network Graphics"
xlink:type="simple"
xlink:href="http://www.Acronyms.net/terms/p/Portable-Network-Graphics/"
xlink:arcrole="&av;definedAt"
xlink:role="&av;definition"
xlink:title="Portable Network Graphics"
xlink:show="new"
xlink:actuate="onRequest"
>
<abbr
xlink:type="simple"
xlink:href="&at;Portable-Network-Graphics"
xlink:arcrole="&av;standsFor"
xlink:role="&av;term"
xlink:title="PNG - Portable Network Graphics"
xlink:show="new"
xlink:actuate="onRequest"
>PNG</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/p/Portable-Network-Graphics/" title="Portable Network Graphics">
<abbr xlink:type="resource" xlink:label="acronym">PNG</abbr>
<span class="hide" xlink:type="resource" xlink:label="verbal" xlink:title="pronunciation">p n g</span>
<span class="hide" xlink:type="resource" xlink:label="expand" xlink:title="expansion">Portable Network Graphics</span>
<span class="hide" xlink:type="locator" xlink:label="term" xlink:role="&av;term" xlink:href="&at;Portable-Network-Graphics" xlink:title="Portable Network Graphics"/>
<span class="hide" xlink:type="locator" xlink:label="definition" xlink:role="&av;definition" xlink:href="http://www.Acronyms.net/terms/p/Portable-Network-Graphics/" xlink:title="Portable Network Graphics"/>
<span class="hide" xlink:type="locator" xlink:label="finder" xlink:role="&av;reference" xlink:href="http://www.Acronyms.net/reference/p/PNG#Portable-Network-Graphics" xlink:title="PNG - Portable Network Graphics"/>
<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/p/Portable-Network-Graphics/" title="Portable Network Graphics">
<abbr>PNG</abbr>
</a>

Printer-friendly PDF* format:

Portable Network Graphics

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