class PageMode:
    UseNone = b"/UseNone"
    UseOutlines = b"/UseOutlines"
    UseThumbs = b"/UseThumbs"
    FullScreen = b"/FullScreen"
    UseOC = b"/UseOC"
    UseAttachments = b"/UseAttachments"


class PageLayout:
    SinglePage = b"/SinglePage"
    Continuous = b"/OneColumn"
