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    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_AddressNumber" xlink:label="AddressNumber_lb" xlink:title="AddressNumber"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="Address_lb" xlink:to="AddressNumber_lb" xlink:title="presentation: Address to AddressNumber" priority="1" order="5.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_AddressName" xlink:label="AddressName_lb" xlink:title="AddressName"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="Address_lb" xlink:to="AddressName_lb" xlink:title="presentation: Address to AddressName" priority="1" order="4.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_RouteType" xlink:label="RouteType_lb" xlink:title="RouteType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="Address_lb" xlink:to="RouteType_lb" xlink:title="presentation: Address to RouteType" priority="1" order="3.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_OtherRouteType" xlink:label="OtherRouteType_lb" xlink:title="OtherRouteType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RouteType_lb" xlink:to="OtherRouteType_lb" xlink:title="presentation: RouteType to OtherRouteType" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-types-2008-01-30.xsd#dgi-types_RouteTypeCodeHead" xlink:label="RouteTypeCodeHead_lb" xlink:title="RouteTypeCodeHead"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RouteType_lb" xlink:to="RouteTypeCodeHead_lb" xlink:title="presentation: RouteType to RouteTypeCodeHead" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_AddressLine" xlink:label="AddressLine_lb" xlink:title="AddressLine"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="Address_lb" xlink:to="AddressLine_lb" xlink:title="presentation: Address to AddressLine" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_AddressFormat" xlink:label="AddressFormat_lb" xlink:title="AddressFormat"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="Address_lb" xlink:to="AddressFormat_lb" xlink:title="presentation: Address to AddressFormat" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_SpecifyAddressFormat" xlink:label="SpecifyAddressFormat_lb" xlink:title="SpecifyAddressFormat"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AddressFormat_lb" xlink:to="SpecifyAddressFormat_lb" xlink:title="presentation: AddressFormat to SpecifyAddressFormat" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-types-2008-01-30.xsd#dgi-types_AddressFormatCodeHead" xlink:label="AddressFormatCodeHead_lb" xlink:title="AddressFormatCodeHead"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AddressFormat_lb" xlink:to="AddressFormatCodeHead_lb" xlink:title="presentation: AddressFormat to AddressFormatCodeHead" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_EntityAddress" xlink:label="EntityAddress_lb" xlink:title="EntityAddress"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityAddress_lb" xlink:to="StatusType_lb" xlink:title="presentation: EntityAddress to StatusType" priority="1" order="4.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityAddress_lb" xlink:to="CommunicationWays_lb" xlink:title="presentation: EntityAddress to CommunicationWays" priority="1" order="3.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityAddress_lb" xlink:to="Address_lb" xlink:title="presentation: EntityAddress to Address" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_AddressTypeList" xlink:label="AddressTypeList_lb" xlink:title="AddressTypeList"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityAddress_lb" xlink:to="AddressTypeList_lb" xlink:title="presentation: EntityAddress to AddressTypeList" use="optional" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-types-2008-01-30.xsd#dgi-types_AddressTypeCodeHead" xlink:label="AddressTypeCodeHead_lb" xlink:title="AddressTypeCodeHead"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AddressTypeList_lb" xlink:to="AddressTypeCodeHead_lb" xlink:title="presentation: AddressTypeList to AddressTypeCodeHead" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_OtherAddressType" xlink:label="OtherAddressType_lb" xlink:title="OtherAddressType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AddressTypeList_lb" xlink:to="OtherAddressType_lb" xlink:title="presentation: AddressTypeList to OtherAddressType" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_EntityInformation" xlink:label="EntityInformation_lb" xlink:title="EntityInformation"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityInformation_lb" xlink:to="EntityName_lb" xlink:title="presentation: EntityInformation to EntityName" use="optional" priority="1" order="1.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityInformation_lb" xlink:to="Identifier_lb" xlink:title="presentation: EntityInformation to Identifier" use="optional" priority="1" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-est-gen-2008-01-30.xsd#dgi-est-gen_ContactPerson" xlink:label="ContactPerson_lb" xlink:title="ContactPerson"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ContactPerson_lb" xlink:to="CommunicationWays_lb" xlink:title="presentation: ContactPerson to CommunicationWays" priority="1" order="4.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ContactPerson_lb" xlink:to="Position_lb" xlink:title="presentation: ContactPerson to Position" priority="1" order="3.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ContactPerson_lb" xlink:to="PersonName_lb" xlink:title="presentation: ContactPerson to PersonName" priority="1" order="2.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ContactPerson_lb" xlink:to="Identifier_lb" xlink:title="presentation: ContactPerson to Identifier" priority="1" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_GeneralEntityInformation" xlink:label="GeneralEntityInformation_lb" xlink:title="GeneralEntityInformation"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="GeneralEntityInformation_lb" xlink:to="EntityInformation_lb" xlink:title="presentation: GeneralEntityInformation to EntityInformation" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_EntityAddressPresentation" xlink:label="EntityAddressPresentation_lb" xlink:title="EntityAddressPresentation"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EntityAddressPresentation_lb" xlink:to="EntityAddress_lb" xlink:title="presentation: EntityAddressPresentation to EntityAddress" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_ContactPersonPresentation" xlink:label="ContactPersonPresentation_lb" xlink:title="ContactPersonPresentation"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ContactPersonPresentation_lb" xlink:to="ContactPerson_lb" xlink:title="presentation: ContactPersonPresentation to ContactPerson" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_OtherContactInformation" xlink:label="OtherContactInformation" xlink:title="OtherContactInformation"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_OtherContactType" xlink:label="OtherContactType" xlink:title="OtherContactType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherContactInformation" xlink:to="OtherContactType" xlink:title="presentation: OtherContactInformation to OtherContactType" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-types-2008-01-30.xsd#dgi-types_OtherContactTypeHead" xlink:label="OtherContactTypeHead" xlink:title="OtherContactTypeHead"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherContactType" xlink:to="OtherContactTypeHead" xlink:title="presentation: OtherContactType to OtherContactTypeHead" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_OthersFormatContact" xlink:label="OthersFormatContact" xlink:title="OthersFormatContact"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherContactType" xlink:to="OthersFormatContact" xlink:title="presentation: OtherContactType to OthersFormatContact" order="2.0"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherContactInformation" xlink:to="CommunicationWays_lb" xlink:title="presentation: OtherContactInformation to CommunicationWays" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_WebsiteInformation" xlink:label="WebsiteInformation" xlink:title="WebsiteInformation"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherContactInformation" xlink:to="WebsiteInformation" xlink:title="presentation: OtherContactInformation to WebsiteInformation" order="3.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_WebsiteType" xlink:label="WebsiteType" xlink:title="WebsiteType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteInformation" xlink:to="WebsiteType" xlink:title="presentation: WebsiteInformation to WebsiteType" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-types-2008-01-30.xsd#dgi-types_WebsiteTypeHead" xlink:label="WebsiteTypeHead" xlink:title="WebsiteTypeHead"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteType" xlink:to="WebsiteTypeHead" xlink:title="presentation: WebsiteType to WebsiteTypeHead" order="1.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_OthersWebsiteType" xlink:label="OthersWebsiteType" xlink:title="OthersWebsiteType"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteType" xlink:to="OthersWebsiteType" xlink:title="presentation: WebsiteType to OthersWebsiteType" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_WebsiteDescription" xlink:label="WebsiteDescription" xlink:title="WebsiteDescription"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteInformation" xlink:to="WebsiteDescription" xlink:title="presentation: WebsiteInformation to WebsiteDescription" order="2.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_WebsiteAddress" xlink:label="WebsiteAddress" xlink:title="WebsiteAddress"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteInformation" xlink:to="WebsiteAddress" xlink:title="presentation: WebsiteInformation to WebsiteAddress" order="3.0"/>
    <loc xlink:type="locator" xlink:href="dgi-gen-bas-2008-01-30.xsd#dgi-gen-bas_WebsiteURL" xlink:label="WebsiteURL" xlink:title="WebsiteURL"/>
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="WebsiteAddress" xlink:to="WebsiteURL" xlink:title="presentation: WebsiteAddress to WebsiteURL" order="1.0"/>
  </presentationLink>
</linkbase>
