The following shows the <ExtendedAttribute> element structure of Microsoft Office Project 2003.
<Project>
. . .
<ExtendedAttributes>
<ExtendedAttribute>
<FieldID/>
<FieldName/>
<Alias/>
<PhoneticAlias/>
<RollupType/>
<CalculationType/>
<Formula/>
<RestrictValues/>
<ValuelistSortOrder/>
<AppendNewValues/>
<Default/>
<ValueList>
<Value>
<ID>
<Value>
<Description>
</Value>
</ValueList>
</ExtendedAttribute>
</ExtendedAttributes>
. . .
</Project>