When a publication is presented as a spread of two pages. This enum defines in which slot the page is intended to rendered into.
The page can be rendered into any spread slot.
The page should be rendered across the entire spread.
The page should be rendered into the left slot of the spread.
The page should be rendered into the right slot of the spread.
When a publication is presented as a spread of two pages. This enum defines in which slot the page is intended to rendered into.