Use a View's IDocumentGroupProperties.PageImagePosition property to specify the default alignment of images displayed in document tabs within all groups. This setting is applied to all document groups by default. The PageImagePosition property allows you to override the IDocumentGroupProperties.PageImagePosition setting for documents in the current document group. To override the default setting, set the PageImagePosition property to any TabPageImagePosition value except null.
The ActualPageImagePosition property returns the actual alignment of images displayed in documents' tabs that belong to the current group, based on a View's IDocumentGroupProperties.PageImagePosition and the current group's PageImagePosition properties.