HTML 5 <wbr> tag
The <wbr> tag is used for specifying a line
break opportunity. The <wbr> tag can be used on very long words or other long
strings of text with no spaces.
The difference between the <wbr> tag and <br>
tag is that the <br> tag forces a line break whereas the <wbr> tag represents a
line break opportunity.
HTML 5 <var> tag
The <var> tag is used for indicating an
instance of a variable. The variable could be part of an application,
mathematical expression, or a placeholder in prose.
Example
<!DOCTYPE
HTML>
<html>
<body>
<!DOCTYPE
html>
<html>
<head>
<title>Example
of var tag</title>
</head>
<body>
<b>This
is the var tag Example:</b><br>
String
<var>
name,address:</var><br>
int <var>
a,b,c,d:</var><br>
</body>
</html>
</body>
</html>
Output

HTML 5 <video> tag
The <video> tag is used to specify video on an
HTML document. For example, you could embed a music video on your web page for
your visitors to listen and watch. The attributes of video element includes
preload,
autoload,
loop
and more.
Example
<!DOCTYPE
HTML>
<html>
<body>
<video
src="movie.ogg"
controls="controls">
your browser does not support the video tag
</video>
</body>
</html>
Output

HTML5 video is quite widely implemented in the
major browsers. It also has support from major websites such as YouTube.