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html5

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New Changed & Obsolete Elements are Marked

<a></a> (w3c)
CHANGED - Attribute
a is used for a hyperlink
Attributes: All Global + href, target, rel, hreflang, media, type
Target was depreciated in previous versions of html (xhtml), it is no longer depreciated: target="_blank"
Can also include any of the following strings:
"_blank", "_self", "_parent", or "_top"
also browsing-context name.

<abbr></abbr> (w3c)
Includes an abbrevaition or acronym
Attributes: All Global

<acronym></acronym>
OBSOLETE


<address></address> (w3c)
 Includes contact information. If the address is applied to a section then the contact information is for that section only this rule also applies to other elements of the page. It is normally placed in the footer. It must not arbitrary contain contact information. It must not contain any other type of information. It must not contain any other tag elements.
Attributes: All Global

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<applet></applet>
OBSOLETE

<area></area> (w3c)
 Image-map hyperlink
Is used as a link or links on an image
Attributes: All Global + alt,href, shape, coords,
shape="rect" or "circle" or "poly"


<article></article> (w3c)
NEW
A section of the content that is an independent part of a document
Example: Magazine, Newspaper article, blog
See article


<aside></aside> (w3c) 
NEW
The content within the aside should relate to the content around it but be separate from it. It could be used for a typographic effect such as a pull quote, advertising, navigation or content that you want to stand out but is still related to the main content.. It should not be used for global navigation.
see aside

<audio></audo> (w3c) 
NEW

Audio represent an audio stream
Attributes: All Global +autoplay, preload, controls, loop, mediagroup, muted, src


<b></b>
CHANGED  
Bold text that does not have any specific meaning
Better to use CSS instead
"Although previous versions of HTML defined the b element only in presentational terms, the element has now been given the specific semantic purpose of representing text “offset from its surrounding content without conveying any extra emphasis or importance, and for which the conventional typographic presentation is bold text”.W3C

<base></base> (w3c) 
NEW

Base specifies a document-wide base URL for the purposes of resolving relative URLs, and a document-wide default name for the purposes of following hyperlinks.
Attributes:href and target or target

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<basefont></basefont> 
OBSOLETE

<bdi></bdi> w3c
NEW
Attributes: All Global
The bdi element represents a span of text that is isolated from its surroundings for the purposes of bidirectional text formatting

<bdo></bd> w3c
NEW
Attributes: All Global
The bdo element represents an explicit text directionality formatting control for its children; it provides a means to specify a direction override of the Unicode BiDi algorithm

<big></big> 
OBSOLETE

<bg></bg>
OBSOLETE

<blink></blink> 
OBSOLETE


<blockquote></blockquote> (w3c)
Encloses a quote from another source. Do not use the blockquote as a design element to just indent text.
Attributes: All Global + cite

See Quotes


<body></body> (w3c) Contains the body of the document
Attributes: All Global +onafterprint & onbeforeprint & onbeforeunload & onblur, onerror, onfocus, onhashchange, onload, onmessage, onoffline, ononline, onpopstate, onresize, onstorage, onunload

<br> (w3c)
CHANGED
Line Break is no longer self closing. The break does not have a closing tag Attributes: All Global

<button></button>
see form

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<canvas></canvas> (w3c) 
NEW
Canvas can include 2D drawing, lines and fills, images and text.
Attributes: All Global + height and width

<caption></caption>
see Tables

<center></center>
OBSOLETE

<cite></cite> (w3c)
CHANGED
The information include within the cite element must be the title of the reference material. It should not contain the author's name.
Attributes: All Global
See Quotes


<code></code> (w3c)
Contains computer code
Attributes: All Global


<col></col> Table column
see Table

<colgroup></colgroup>
group of table columns see Table

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<command></command> w3c
NEW
The command element is a multipurpose element for representing commands

<datalist></datalist> (w3c)
NEW
The datalist element represents a set of option elements that represent predefined options for other controls.
Attributes: All Global


<dd></dd>
<dt></dt>
see list


<del></del> (w3c) represents text that has been deleleted from the document
Attributes: All Global + datetime: date, time or date and time
cite: link to an explanation as to why the text was deleted.

<details> </details> (w3c)

Represents a control from which the user can obtain additional information or controls on-demand.
At the moment only supported by Crome (March 2012)
Attributes: All Global


<dfn></dfn> w3c
The dfn element represents the defining instance of a term.

<dir></dir>
OBSOLETE

<div> </div> (w3c)
The div is not a semantic element but it can still be used but rarely. You can use it for styling purposes only.
Attributes: All Global


<dl></dl>
description list
see list


<em></em> (w3c)
Em is used for emphasis. It is particularly important to use this tag when changing the style, color or size to emphasis a point otherwise the emphasis will not be read for 508.
Attributes: All Global

<embed><embed> (w3c) 
NEW
A container for external application, interactive content, which involves a third-party plugin
Attributes: All Global + src, type, height, width
type: MIME type of the embedded content

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<fieldset></fieldset>
description list
see form


<figcaption><figcaption> (w3c) 
NEW
The caption for a figure
Only permitted parent element is the figure tag
Attributes: All Global

see figure and figcaption


<figure></figure> (w3c) 
NEW
The contains of the figure element can be photographs, charts, maps, illustrations, diagrams snippets of code, videos etc. You should be able to move the content of the figure element out of the main flow of the rest of the information without affecting the meaning of the main information. The figure element can contain one figcaption.
Attributes: All Global
see figure and figcaption


<font></font> 
OBSOLETE


<footer></footer> (w3c) 
NEW
The footer can represent a footer of the page, section, article etc
The footer cannot be included in the header, address, footer
Attributes: All Global

See Footer

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<form></form>
see form

<frame></frame> 
OBSOLETE

<frameset></frameset > 
OBSOLETE

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