| WiX Database XML Schema |
Element: InstallExecuteSequence
Derived By
Restricting anyType
Content Model
Contains elements as defined in the following table.
| Component | Type | Occurs | Description |
|---|---|---|---|
 |
0..* | ||
| AllocateRegistrySpace | ActionSequenceType | 0..1 | Ensures the needed amount of space exists in the registry. |
| AppSearch | ActionModuleSequenceType | 0..1 | Uses file signatures to search for existing versions of products. |
| BindImage | ActionSequenceType | 0..1 | Binds each executable or DLL that must be bound to the DLLs imported by it. |
| CCPSearch | ActionModuleSequenceType | 1..1 | Uses file signatures to validate that qualifying products are installed on a system before an upgrade installation is performed. |
| CostFinalize | ActionSequenceType | 1..1 | Ends the internal installation costing process begun by the CostInitialize action. |
| CostInitialize | ActionSequenceType | 1..1 | Initiates the internal installation costing process. |
| CreateFolders | ActionSequenceType | 0..1 | Creates empty folders for components that are set to be installed. |
| CreateShortcuts | ActionSequenceType | 0..1 | Manages the creation of shortcuts. |
| Custom | string (extension) | 0..* | Use to sequence a custom action. |
| DeleteServices | ActionSequenceType | 1..1 | Stops a service and removes its registration from the system. |
| DisableRollback | ActionModuleSequenceType | 0..1 | Disables rollback for the remainder of the installation. |
| DuplicateFiles | ActionSequenceType | 1..1 | Duplicates files installed by the InstallFiles action. |
| FileCost | ActionSequenceType | 1..1 | Initiates dynamic costing of standard installation actions. |
| FindRelatedProducts | ActionModuleSequenceType | 0..1 | Runs through each record of the Upgrade table in sequence and compares the upgrade code, product version, and language in each row to products installed on the system. |
| ForceReboot | ActionModuleSequenceType | 0..1 | Prompts the user for a restart of the system during the installation. |
| InstallExecute | ActionModuleSequenceType | 0..1 | Runs a script containing all operations spooled since either the start of the installation or the last InstallExecute action, or InstallExecuteAgain action. |
| InstallExecuteAgain | ActionModuleSequenceType | 0..1 | Runs a script containing all operations spooled since either the start of the installation or the last InstallExecute action, or InstallExecuteAgain action. |
| InstallFiles | ActionSequenceType | 0..1 | Copies files specified in the File table from the source directory to the destination directory. |
| InstallFinalize | ActionSequenceType | 1..1 | Marks the end of a sequence of actions that change the system. |
| InstallInitialize | ActionSequenceType | 1..1 | Marks the beginning of a sequence of actions that change the system. |
| InstallODBC | ActionSequenceType | 1..1 | Installs the drivers, translators, and data sources in the ODBCDriver table, ODBCTranslator table, and ODBCDataSource table. |
| InstallServices | ActionSequenceType | 1..1 | Registers a service for the system. |
| InstallValidate | ActionSequenceType | 1..1 | Verifies that all costed volumes have enough space for the installation. |
| IsolateComponents | ActionSequenceType | 1..1 | Installs a copy of a component (commonly a shared DLL) into a private location for use by a specific application (typically an .exe). |
| LaunchConditions | ActionModuleSequenceType | 0..1 | Queries the LaunchCondition table and evaluates each conditional statement recorded there. |
| MigrateFeatureStates | ActionSequenceType | 1..1 | Used for upgrading or installing over an existing application. |
| MoveFiles | ActionSequenceType | 1..1 | Locates existing files on the system and moves or copies those files to a new location. |
| MsiPublishAssemblies | ActionSequenceType | 1..1 | Manages the advertisement of CLR and Win32 assemblies. |
| MsiUnpublishAssemblies | ActionSequenceType | 1..1 | Manages the unadvertisement of CLR and Win32 assemblies that are being removed. |
| PatchFiles | ActionSequenceType | 1..1 | Queries the Patch table to determine which patches are to be applied. |
| ProcessComponents | ActionSequenceType | 1..1 | Registers and unregisters components, their key paths, and the component clients. |
| PublishComponents | ActionSequenceType | 0..1 | Manages the advertisement of the components from the PublishComponent table. |
| PublishFeatures | ActionSequenceType | 0..1 | Writes each feature's state into the system registry. |
| PublishProduct | ActionSequenceType | 0..1 | Manages the advertisement of the product information with the system. |
| RegisterClassInfo | ActionSequenceType | 0..1 | Manages the registration of COM class information with the system. |
| RegisterComPlus | ActionSequenceType | 1..1 | Registers COM+ applications. |
| RegisterExtensionInfo | ActionSequenceType | 1..1 | Manages the registration of extension related information with the system. |
| RegisterFonts | ActionSequenceType | 1..1 | Registers installed fonts with the system. |
| RegisterMIMEInfo | ActionSequenceType | 1..1 | Registers MIME-related registry information with the system. |
| RegisterProduct | ActionSequenceType | 0..1 | Registers the product information with the installer. |
| RegisterProgIdInfo | ActionSequenceType | 0..1 | Manages the registration of OLE ProgId information with the system. |
| RegisterTypeLibraries | ActionSequenceType | 0..1 | Registers type libraries with the system. |
| RegisterUser | ActionSequenceType | 0..1 | Registers the user information with the installer to identify the user of a product. |
| RemoveDuplicateFiles | ActionSequenceType | 1..1 | Deletes files installed by the DuplicateFiles action. |
| RemoveEnvironmentStrings | ActionSequenceType | 1..1 | Modifies the values of environment variables. |
| RemoveExistingProducts | ActionModuleSequenceType | 1..1 | Goes through the product codes listed in the ActionProperty column of the Upgrade table and removes the products in sequence. |
| RemoveFiles | ActionSequenceType | 0..1 | Removes files previously installed by the InstallFiles action. |
| RemoveFolders | ActionSequenceType | 0..1 | Removes any folders linked to components set to be removed or run from source. |
| RemoveIniValues | ActionSequenceType | 1..1 | Removes .ini file information specified for removal in the RemoveIniFile table if the component is set to be installed locally or run from source. |
| RemoveODBC | ActionSequenceType | 1..1 | Removes the data sources, translators, and drivers listed for removal during the installation. |
| RemoveRegistryValues | ActionSequenceType | 0..1 | Removes a registry value that has been authored into the registry table if the associated component was installed locally or as run from source, and is now set to be uninstalled. |
| RemoveShortcuts | ActionSequenceType | 0..1 | Manages the removal of an advertised shortcut whose feature is selected for uninstallation or a nonadvertised shortcut whose component is selected for uninstallation. |
| ResolveSource | ActionModuleSequenceType | 0..1 | Determines the location of the source and sets the SourceDir property if the source has not been resolved yet. |
| RMCCPSearch | ActionModuleSequenceType | 1..1 | Uses file signatures to validate that qualifying products are installed on a system before an upgrade installation is performed. |
| ScheduleReboot | ActionModuleSequenceType | 0..1 | Prompts the user to restart the system at the end of installation. |
| SelfRegModules | ActionSequenceType | 0..1 | Processes all modules listed in the SelfReg table and registers all installed modules with the system. |
| SelfUnregModules | ActionSequenceType | 0..1 | Unregisters all modules listed in the SelfReg table that are scheduled to be uninstalled. |
| SetODBCFolders | ActionSequenceType | 1..1 | Checks for existing ODBC drivers and sets the target directory for each new driver to the location of an existing driver. |
| StartServices | ActionSequenceType | 1..1 | Starts system services. |
| StopServices | ActionSequenceType | 1..1 | Stops system services. |
| UnpublishComponents | ActionSequenceType | 0..1 | Manages the unadvertisement of components listed in the PublishComponent table. |
| UnpublishFeatures | ActionSequenceType | 0..1 | Removes selection-state and feature-component mapping information from the registry. |
| UnregisterClassInfo | ActionSequenceType | 0..1 | Manages the removal of COM class information from the system registry. |
| UnregisterComPlus | ActionSequenceType | 1..1 | Removes COM+ applications from the registry. |
| UnregisterExtensionInfo | ActionSequenceType | 1..1 | Manages the removal of extension-related information from the system registry. |
| UnregisterFonts | ActionSequenceType | 1..1 | Removes registration information about installed fonts from the system. |
| UnregisterMIMEInfo | ActionSequenceType | 1..1 | Unregisters MIME-related registry information from the system. |
| UnregisterProgIdInfo | ActionSequenceType | 0..1 | Manages the unregistration of OLE ProgId information with the system. |
| UnregisterTypeLibraries | ActionSequenceType | 0..1 | Unregisters type libraries from the system. |
| ValidateProductID | ActionSequenceType | 1..1 | Sets the ProductID property to the full product identifier. |
| WriteEnvironmentStrings | ActionSequenceType | 1..1 | Modifies the values of environment variables. |
| WriteIniValues | ActionSequenceType | 1..1 | Writes the .ini file information that the application needs written to its .ini files. |
| WriteRegistryValues | ActionSequenceType | 0..1 | Sets up an application's registry information. |
Definition
<xs:element name="InstallExecuteSequence">
<xs:annotation>
<xs:appinfo>
<xse:msiRef table="InstallExecuteSequence" href="http://msdn.microsoft.com/library/aa369500.aspx" xmlns:xse="http://schemas.microsoft.com/wix/2005/XmlSchemaExtension" />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<!-- used only to supply default op for child action elements -->
<xs:element ref="Custom" minOccurs="0" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Use to sequence a custom action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="ScheduleReboot" minOccurs="0">
<xs:annotation>
<xs:documentation>Prompts the user to restart the system at the end of installation. Not fixed sequence.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="ForceReboot" minOccurs="0">
<xs:annotation>
<xs:documentation>Prompts the user for a restart of the system during the installation. Not fixed sequence.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="ResolveSource" minOccurs="0">
<xs:annotation>
<xs:documentation>Determines the location of the source and sets the SourceDir property if the source has not been resolved yet. Not fixed sequence.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="LaunchConditions" minOccurs="0">
<xs:annotation>
<xs:documentation>Queries the LaunchCondition table and evaluates each conditional statement recorded there.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="FindRelatedProducts" minOccurs="0">
<xs:annotation>
<xs:documentation>Runs through each record of the Upgrade table in sequence and compares the upgrade code, product version, and language in each row to products installed on the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="AppSearch" minOccurs="0">
<xs:annotation>
<xs:documentation>Uses file signatures to search for existing versions of products.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="CCPSearch">
<xs:annotation>
<xs:documentation>Uses file signatures to validate that qualifying products are installed on a system before an upgrade installation is performed.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RMCCPSearch">
<xs:annotation>
<xs:documentation>Uses file signatures to validate that qualifying products are installed on a system before an upgrade installation is performed.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="ValidateProductID">
<xs:annotation>
<xs:documentation>Sets the ProductID property to the full product identifier.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="CostInitialize">
<xs:annotation>
<xs:documentation>Initiates the internal installation costing process.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="FileCost">
<xs:annotation>
<xs:documentation>Initiates dynamic costing of standard installation actions.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="IsolateComponents">
<xs:annotation>
<xs:documentation>Installs a copy of a component (commonly a shared DLL) into a private location for use by a specific application (typically an .exe).</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="CostFinalize">
<xs:annotation>
<xs:documentation>Ends the internal installation costing process begun by the CostInitialize action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="SetODBCFolders">
<xs:annotation>
<xs:documentation>Checks for existing ODBC drivers and sets the target directory for each new driver to the location of an existing driver.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="MigrateFeatureStates">
<xs:annotation>
<xs:documentation>Used for upgrading or installing over an existing application.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallValidate">
<xs:annotation>
<xs:documentation>Verifies that all costed volumes have enough space for the installation.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallInitialize">
<xs:annotation>
<xs:documentation>Marks the beginning of a sequence of actions that change the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="AllocateRegistrySpace" minOccurs="0">
<xs:annotation>
<xs:documentation>Ensures the needed amount of space exists in the registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="ProcessComponents">
<xs:annotation>
<xs:documentation>Registers and unregisters components, their key paths, and the component clients.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnpublishComponents" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the unadvertisement of components listed in the PublishComponent table.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnpublishFeatures" minOccurs="0">
<xs:annotation>
<xs:documentation>Removes selection-state and feature-component mapping information from the registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="StopServices">
<xs:annotation>
<xs:documentation>Stops system services.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="DeleteServices">
<xs:annotation>
<xs:documentation>Stops a service and removes its registration from the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterComPlus">
<xs:annotation>
<xs:documentation>Removes COM+ applications from the registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="SelfUnregModules" minOccurs="0">
<xs:annotation>
<xs:documentation>Unregisters all modules listed in the SelfReg table that are scheduled to be uninstalled.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterTypeLibraries" minOccurs="0">
<xs:annotation>
<xs:documentation>Unregisters type libraries from the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveODBC">
<xs:annotation>
<xs:documentation>Removes the data sources, translators, and drivers listed for removal during the installation.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterFonts">
<xs:annotation>
<xs:documentation>Removes registration information about installed fonts from the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveRegistryValues" minOccurs="0">
<xs:annotation>
<xs:documentation>Removes a registry value that has been authored into the registry table if the associated component was installed locally or as run from source, and is now set to be uninstalled.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterClassInfo" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the removal of COM class information from the system registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterExtensionInfo">
<xs:annotation>
<xs:documentation>Manages the removal of extension-related information from the system registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterProgIdInfo" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the unregistration of OLE ProgId information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="UnregisterMIMEInfo">
<xs:annotation>
<xs:documentation>Unregisters MIME-related registry information from the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveIniValues">
<xs:annotation>
<xs:documentation>Removes .ini file information specified for removal in the RemoveIniFile table if the component is set to be installed locally or run from source.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveShortcuts" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the removal of an advertised shortcut whose feature is selected for uninstallation or a nonadvertised shortcut whose component is selected for uninstallation.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveEnvironmentStrings">
<xs:annotation>
<xs:documentation>Modifies the values of environment variables.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveDuplicateFiles">
<xs:annotation>
<xs:documentation>Deletes files installed by the DuplicateFiles action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveFiles" minOccurs="0">
<xs:annotation>
<xs:documentation>Removes files previously installed by the InstallFiles action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveFolders" minOccurs="0">
<xs:annotation>
<xs:documentation>Removes any folders linked to components set to be removed or run from source.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="CreateFolders" minOccurs="0">
<xs:annotation>
<xs:documentation>Creates empty folders for components that are set to be installed.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="MoveFiles">
<xs:annotation>
<xs:documentation>Locates existing files on the system and moves or copies those files to a new location.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallFiles" minOccurs="0">
<xs:annotation>
<xs:documentation>Copies files specified in the File table from the source directory to the destination directory.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="DuplicateFiles">
<xs:annotation>
<xs:documentation>Duplicates files installed by the InstallFiles action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="PatchFiles">
<xs:annotation>
<xs:documentation>Queries the Patch table to determine which patches are to be applied.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="BindImage" minOccurs="0">
<xs:annotation>
<xs:documentation>Binds each executable or DLL that must be bound to the DLLs imported by it.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="CreateShortcuts" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the creation of shortcuts.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterClassInfo" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the registration of COM class information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterExtensionInfo">
<xs:annotation>
<xs:documentation>Manages the registration of extension related information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterProgIdInfo" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the registration of OLE ProgId information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterMIMEInfo">
<xs:annotation>
<xs:documentation>Registers MIME-related registry information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="WriteRegistryValues" minOccurs="0">
<xs:annotation>
<xs:documentation>Sets up an application's registry information.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="WriteIniValues">
<xs:annotation>
<xs:documentation>Writes the .ini file information that the application needs written to its .ini files.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="WriteEnvironmentStrings">
<xs:annotation>
<xs:documentation>Modifies the values of environment variables.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterFonts">
<xs:annotation>
<xs:documentation>Registers installed fonts with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallODBC">
<xs:annotation>
<xs:documentation>Installs the drivers, translators, and data sources in the ODBCDriver table, ODBCTranslator table, and ODBCDataSource table.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterTypeLibraries" minOccurs="0">
<xs:annotation>
<xs:documentation>Registers type libraries with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="SelfRegModules" minOccurs="0">
<xs:annotation>
<xs:documentation>Processes all modules listed in the SelfReg table and registers all installed modules with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterComPlus">
<xs:annotation>
<xs:documentation>Registers COM+ applications.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallServices">
<xs:annotation>
<xs:documentation>Registers a service for the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="StartServices">
<xs:annotation>
<xs:documentation>Starts system services.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterUser" minOccurs="0">
<xs:annotation>
<xs:documentation>Registers the user information with the installer to identify the user of a product.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RegisterProduct" minOccurs="0">
<xs:annotation>
<xs:documentation>Registers the product information with the installer.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="PublishComponents" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the advertisement of the components from the PublishComponent table.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="PublishFeatures" minOccurs="0">
<xs:annotation>
<xs:documentation>Writes each feature's state into the system registry.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="PublishProduct" minOccurs="0">
<xs:annotation>
<xs:documentation>Manages the advertisement of the product information with the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallFinalize">
<xs:annotation>
<xs:documentation>Marks the end of a sequence of actions that change the system.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="RemoveExistingProducts">
<xs:annotation>
<xs:documentation>Goes through the product codes listed in the ActionProperty column of the Upgrade table and removes the products in sequence.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="DisableRollback" minOccurs="0">
<xs:annotation>
<xs:documentation>Disables rollback for the remainder of the installation.</xs:documentation>
</xs:annotation>
</xs:element>
<!-- InstallExecute and InstallExecuteAgain can optionally appear anywhere between InstallInitialize and InstallFinalize -->
<xs:element ref="InstallExecute" minOccurs="0">
<xs:annotation>
<xs:documentation>Runs a script containing all operations spooled since either the start of the installation or the last InstallExecute action, or InstallExecuteAgain action.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="InstallExecuteAgain" minOccurs="0">
<xs:annotation>
<xs:documentation>Runs a script containing all operations spooled since either the start of the installation or the last InstallExecute action, or InstallExecuteAgain action.</xs:documentation>
</xs:annotation>
</xs:element>
<!-- Windows Installer 1.5 actions -->
<xs:element ref="MsiPublishAssemblies">
<xs:annotation>
<xs:documentation>Manages the advertisement of CLR and Win32 assemblies.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element ref="MsiUnpublishAssemblies">
<xs:annotation>
<xs:documentation>Manages the unadvertisement of CLR and Win32 assemblies that are being removed.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>