com.aspose.words

Example:

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

// Modify the page setup properties for the builder's current section, and add text.
builder.getPageSetup().setOrientation(Orientation.LANDSCAPE);
builder.getPageSetup().setVerticalAlignment(PageVerticalAlignment.CENTER);
builder.writeln("This is the first section, which landscape oriented with vertically centered text.");

// If we start a new section using a document builder,
// it will inherit the builder's current page setup properties.
builder.insertBreak(BreakType.SECTION_BREAK_NEW_PAGE);

Assert.assertEquals(Orientation.LANDSCAPE, doc.getSections().get(1).getPageSetup().getOrientation());
Assert.assertEquals(PageVerticalAlignment.CENTER, doc.getSections().get(1).getPageSetup().getVerticalAlignment());

// We can revert its page setup properties to their default values using the "ClearFormatting" method.
builder.getPageSetup().clearFormatting();

Assert.assertEquals(Orientation.PORTRAIT, doc.getSections().get(1).getPageSetup().getOrientation());
Assert.assertEquals(PageVerticalAlignment.TOP, doc.getSections().get(1).getPageSetup().getVerticalAlignment());

builder.writeln("This is the second section, which is in default Letter paper size, portrait orientation and top alignment.");

doc.save(getArtifactsDir() + "PageSetup.ClearFormatting.docx");