The Emphasis element indicates typographic emphasis, typically
rendered as italics."The <EM>Emphasis</EM>
element emphasises the text" would be displayed as:
The Emphasis element emphasises the text..
<EM> can also take the CLASS, ID and STYLE attributes to
allow style sheet definitions to be applied to it. For more
details of these attributes, refer to the Style Sheets topic.
The <EMBED> element allows you to put
objects directly into an HTML page. The syntax is:
<EMBED SRC="object_to_embed">
The <EMBED> element will allow you to embed documents of
any type. The visitor to your page only needs to have an
application which can view the data installed correctly on their
machine, or have a plug-in (for Netscape and Internet Explorer)
that can manipulate the embedded file format.
The <EMBED> element can be used more or less the same as
the <IMG> element and so accepts typical image embedding
attributes such as WIDTH, HEIGHT, BORDER, HSPACE, VSPACE.
Two examples of objects that can be embedded within the document
are audio and video files.
This tag is expected to undergo a major revision and enhancement
in the next HTML specifications.