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Specifies the page layout to be used when the document is opened. NOTE! Names of enum items should match PDF specification see PDF1.7page140.
OneColumn: 1;
Display the pages in one column.
SinglePage: 0;
Display one page at a time.
TwoColumnLeft: 2;
Display the pages in two columns, with odd-numbered pages on the left.
TwoColumnRight: 3;
Display the pages in two columns, with odd-numbered pages on the right.
TwoPageLeft: 4;
(PDF 1.5) Display the pages two at a time, with odd-numbered pages on the left.
TwoPageRight: 5;
(PDF 1.5) Display the pages two at a time, with odd-numbered pages on the right.