Type Alias PageLayout

PageLayout:
    | "SinglePage"
    | "OneColumn"
    | "TwoColumnLeft"
    | "TwoColumnRight"
    | "TwoPageLeft"
    | "TwoPageRight"

How a reader arranges pages on screen — the catalog /PageLayout name (ISO 32000-1 §7.7.2). Passed to GigaPdfDoc.setPageLayout.