Download the sample configuration file, or see the following example:
<?xml version="1.0" encoding="utf-8"?>
<configuration version="1.9">
<general>
<workspace directory="" autoSave="True"/>
<!--Custom or History-->
<startupView value="Custom">
<camera>
<mapPoint x="-92" y="41" z="11000000" wkid="4326"/>
<heading value="0"/>
<pitch value="0"/>
<roll value="0"/>
</camera>
</startupView>
<!--WebMercator or WGS84-->
<spatialReference value="WebMercator" />
<isShowInExternalBrowser value="False" />
<isShowStartupTips value="True" />
<!--Display language: English Japanese Polish Russian-->
<!--Example: https://developers.arcgis.com/rest/users-groups-and-items/languages.htm-->
<!--If the value is System, then the display language will match Microsoft Windows.-->
<language value="System"/>
</general>
<navigation>
<!--speed:0 ~ 100-->
<flyto speed="50" autoZoomToNewLayer="True"/>
<!--speed:0 ~ 100; zoomDirection:Forward or Backward-->
<mouseWheel speed="50" zoomDirection="Forward"/>
<continuousPanning value="True" />
<nonMouseController enable="False" reverse="False" />
</navigation>
<effects3d>
<!--On or Off-->
<atmosphere value="Off"/>
<elevationExaggeration value="1"/>
</effects3d>
<units>
<!--DD DMS UTM_Meter UTM_Feet MGRS-->
<location value="DMS" />
<!--Meters Inches Feet Kilometers Miles NauticalMiles Yards-->
<distance value="Meters" />
<!--Meters Inches Feet Kilometers Miles NauticalMiles Yards-->
<elevation value="Meters" />
<!--SquareMeters SquareMiles SquareYards Acres Ares Hectares SquareCentimeters SquareDecimeters SquareFeet SquareInches SquareKilometers-->
<area value="SquareMeters" />
<isLongitudeFront value="True" />
</units>
<advanced>
<proxy use="False">
<address value="" />
<username value="" />
<password value="" />
</proxy>
</advanced>
<!--Admin Settings-->
<isDefaultKmlViewer value="False"/>
<blockArcGISOnline value="False"/>
<portals>
<portal url="https://www.arcgis.com"/>
</portals>
<!--Configure the list of portals or servers you wish ArcGIS Earth to send credentials to when working with services secured with PKI authentication, especially for the Oracle Access Management servers.-->
<pkiServers>
<!--<server url="https://secure.domain.com"/>
<server url="https://webadaptorhost.domain.com"/>-->
</pkiServers>
<fonts>
<symbolFontName value="Avenir Next LT Pro"/>
</fonts>
<log enable="True">
<!--Debug Info Warning or Error-->
<category value="Info"/>
<rollSizeKB value="10000"/>
<maxArchivedFiles value="1000"/>
</log>
<startupLayers name="Startup Layers" state="Visible">
<!--<layer name="startup_kml" type="KML" url="C:\test.kml" state="Visible"/>
<layer name="startup_shapefile" type="Shapefile" url="C:\test.shp" state="Invisible"/>
<group name="group_name_1" state="Visible">
<layer name="startup_wms" type="WMS" url="http://<catalog-url>/<serviceName>/MapServer/WMSServer" state="Visible"/>
<layer name="startup_mapservice" type="MapService" url="http://<catalog-url>/<serviceName>/MapServer" state="Invisible"/>
<group name="group_name_2" state="Invisible">
<layer name="startup_featureservice" type="FeatureService" url="http://<catalog-url>/<serviceName>/FeatureServer" state="Visible"/>
<layer name="startup_imageservice" type="ImageService" url="http://<catalog-url>/<serviceName>/ImageServer" state="Invisible"/>
</group>
<layer name="startup_sceneservice" type="SceneService" url="http://<catalog-url>/<serviceName>/SceneServer" state="Visible"/>
</group>
<layer name="startup_tilepackage" type="TilePackage" url="C:\test.tpk" state="Invisible"/>
<layer name="startup_scenelayerpackage" type="SceneLayerPackage" url="C:\test.slpk" state="Visible"/>
<layer name="startup_raster" type="Raster" url="C:\test.tif" state="Visible"/>-->
</startupLayers>
<organizationalBasemaps>
<!--<basemap name="basemap_kml" type="KML" url="C:\test.kml"/>
<basemap name="basemap_wms" type="WMS" url="http://<catalog-url>/<serviceName>/MapServer/WMSServer"/>
<basemap name="basemap_mapservice" type="MapService" url="http://<catalog-url>/<serviceName>/MapServer"/>
<basemap name="basemap_featureservice" type="FeatureService" url="http://<catalog-url>/<serviceName>/FeatureServer"/>
<basemap name="basemap_imageservice" type="ImageService" url="http://<catalog-url>/<serviceName>/ImageServer"/>
<basemap name="basemap_sceneservice" type="SceneService" url="http://<catalog-url>/<serviceName>/SceneServer"/>
<basemap name="basemap_tilepackage" type="TilePackage" url="C:\test.tpk"/>
<basemap name="basemap_scenelayerpackage" type="SceneLayerPackage" url="C:\test.slpk"/>
<basemap name="basemap_raster" type="Raster" url="C:\test.tif"/>-->
</organizationalBasemaps>
<organizationalTerrains>
<!--<terrain name="terrain_multi_file" enable="True" url = "C:\test.dt1;C:\test.dt2"/>
<terrain name="terrain_single_file" enable="False" url = "C:\test.tif"/>
<terrain name="terrain_service" enable="False" url = "http://<elevation3d.arcgis.com>/<arcgis>/rest>/services>/WorldElevation3D>/Terrain3D>/ImageServer"/>-->
</organizationalTerrains>
<positionServiceUrl>
<!--<urlwithpos value="http://127.0.0.1:8585/pointBasedService?lon=%LONGITUDE%&lat=%LATITUDE%&elv=%ELEVATION%&output=.kml" />
<urlwithoutpos value="http://127.0.0.1:8585/randomService?&output=.kml" />-->
</positionServiceUrl>
<localKmlIcons enable="False">
<path value = ""/>
</localKmlIcons>
<aboutSettings>
<acknowledgement visible="True">
<url value="http://www.esri.com/legal/open-source-acknowledgements" />
</acknowledgement>
<help>
<url value="http://doc.arcgis.com/en/arcgis-earth/" />
</help>
<submitFeedback visible="True">
<url value="https://community.esri.com/groups/arcgis-earth" />
</submitFeedback>
</aboutSettings>
<bannerSettings visible="False">
<bannerBar>
<height value="58" />
<background value="#88000000" />
<bottomOffset value="125" />
</bannerBar>
<bannerText>
<content value="Welcome to ArcGIS Earth" />
<!--Left Center or Right-->
<contentAlignment value="Center"/>
<fontColor value="#ffffff" />
<fontName value="" />
<fontSize value="24" />
<!--Normal Italic-->
<fontStyle value="Normal" />
</bannerText>
</bannerSettings>
</configuration>