<xs:element name="area-code" type="commons:stringnumeric">
<xs:annotation>
<xs:documentation>
The area-code comes after the country code and
precedes the local-number.
The regional identifier (or overlay identifier)
applied by the national carrier regulation
authority.
In some locales, the use of area code is mandatory
for dialing all numbers while in other it is only
necessary for dialing outside of the local calling
area.
The schema does not enforce the use of valid codes.
Additionally, the schema suppresses parentheses
that are normally present in printed examples.
Here are some examples of the country code and
location
(312) for the Chicago-IL US overlay
(020) for Amsterdam, the Netherlands calls
originating from within the country directed
to Amsterdam.
Within this schema, the example values will be
312
020
</xs:documentation>
<xs:appinfo>
<retsid>100053</retsid>
<example>888</example>
</xs:appinfo>
</xs:annotation>
</xs:element>
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