3.1.4.5.3.5 LanguageAndDelta

 <s:complexType name="LanguageAndDelta">
   <s:sequence>
     <s:element minOccurs="1" maxOccurs="1" name="Id" 
     type="s:int" />
     <s:element minOccurs="1" maxOccurs="1" name="Delta" 
     type="s:boolean" />
   </s:sequence>
 </s:complexType>

Id: Identifies the language for which update revisions are requested, as specified in [MS-LCID].

Delta: Set TRUE to indicate that only update revisions newer than the time denoted by the anchor are requested. Set FALSE to indicate that all update revisions are requested.