Which panel a viewer shows next to the pages: the catalog's PageMode entry and the viewer preference NonFullScreenPageMode.
public enum PdfPageMode
ISO 32000-2 §7.7.2, Table 29, and §12.2, Table 147. The default is UseNone.
kind:method, kind:property, kind:ctor. Press Esc to clear.FullScreenFull-screen mode, no menu bar, window controls or other windows (FullScreen; not a valid NonFullScreenPageMode).UseAttachmentsThe attachments panel (UseAttachments, PDF 1.6; not a valid NonFullScreenPageMode).UseNoneNeither the outline nor thumbnails (UseNone, the default).UseOCThe optional content group panel (UseOC, PDF 1.5).UseOutlinesThe document outline (UseOutlines).UseThumbsThumbnail images (UseThumbs).