Lists values that specify the panel style of the attachments viewer.
This mode is similar to DockPanel.
The attachments panel is positioned above the document window. Moving the cursor away from the panel will cause it to collapse. Clicking on the panel button will expand the attachments panel without sliding.
The attachments panel is placed in the PDF Viewer without overlapping the document window.
The values listed by this enumeration are used to set the PdfAttachmentsViewerSettings.AttachmentsViewerPanelStyle property value.