Google Apps Script API
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    A layout item that marks the start of a page. Items can be accessed or created from a Form.

    // Create a form and add three page-break items.
    var form = FormApp.create('Form Name');
    var pageTwo = form.addPageBreakItem().setTitle('Page Two');
    var pageThree = form.addPageBreakItem().setTitle('Page Three');
    
    // Make the first two pages navigate elsewhere upon completion.
    pageTwo.setGoToPage(pageThree); // At end of page one (start of page two), jump to page three
    pageThree.setGoToPage(FormApp.PageNavigationType.RESTART); // At end of page two, restart form
    
    interface PageBreakItem {
        duplicate(): PageBreakItem;
        getGoToPage(): PageBreakItem;
        getHelpText(): string;
        getId(): number;
        getIndex(): number;
        getPageNavigationType(): PageNavigationType;
        getTitle(): string;
        getType(): ItemType;
        setGoToPage(goToPageItem: PageBreakItem): PageBreakItem;
        setGoToPage(navigationType: PageNavigationType): PageBreakItem;
        setHelpText(text: string): PageBreakItem;
        setTitle(title: string): PageBreakItem;
    }
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