I have inherited a C# application that opens ArcMap and does a lot of geoprocessing. The datasets are complex and cover a large area so they take a long time to draw. I'd like to programmatically uncheck the 'Make newly added layers visible by default' checkbox in the ArcMap Options window so that the application can run faster and wait to draw everything up after all the processing is done. I cannot find a reference anywhere to that setting. I have found the Igeoprocessoroptions interface that controls some similar options but not that one. Any ideas? Thanks.