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Returns or sets how Microsoft Word handles calls to methods and properties that require features not yet installed.
Assembly: Microsoft.Office.Interop.Word (in Microsoft.Office.Interop.Word.dll)
You can use the msoFeatureInstallOnDemandWithUI constant to prevent users from believing that the application isn't responding while a feature is being installed. Use the msoFeatureInstallNone constant if you want the developer to be the only one who can install features.
If you have the DisplayAlerts property set to False, users will not be prompted to install new features even if the FeatureInstall property is set to msoFeatureInstallOnDemand. If the DisplayAlerts property is set to True, an installation progress meter will appear if the FeatureInstall property is set to msoFeatureInstallOnDemand.