Summary:
Indicates that the text within the tags should be rendered with some form of emphasis. Authors should attempt to use the em and strong tags in place of the b, i and u tags, except where explicit control over text presentation is required.

Attributes:

Name	Data type	Mandatory	Default	Description
id	String	X		A unique name for the tag within the deck
class	String	X		A name of a class of which the tag is a member
xml:lang	String	X		The natural or formal language of the tag or its attributes

Nested tags:
<em> <strong> <b> <i> <u> <big> <small> <br> <img> <anchor> <a> <table>