<em>
    
    
    Emphasis indicates special meaning or particular importance.
Rendering expectations
For Western languages, the content of the
          <em> element is typically rendered in an
        italic font.
Specialization hierarchy
The <em> element is
        specialized from <ph>. It is defined in the
        emphasis-domain module.
Content model
(Text | <cite> | <include> | <keyword> | <ph> | <q> | <term> | <text> | <tm> | <xref> | <data> | <draft-comment> | <foreign> | <required-cleanup>)*
Not contained by any element.
Not contained by any element.
Inheritance
+ topic/ph emphasis-d/em
The <em> element is specialized from <ph>. It is defined in the emphasis-domain module.
Attributes
The following attributes are
        available on this element: universal
                                                  attributes and @keyref.
The following attributes are available on this element: universal attributes and the attributes defined below.
- @keyref
- Specifies a key name that acts as a redirectable reference based on a key definition within a map. See The keyref attribute for information on using this attribute.
Example
This section is non-normative.
The following code sample shows how the
          <em> element can be used to emphasize a
        phrase in a paragraph:
<p>A good plan once adopted and put into execution <em>should not be 
abandoned</em> unless it becomes clear that it can not succeed.</p>