You can change the page setup for part of the questionnaire or for all of it. For example, you might want to use landscape orientation for the entire questionnaire if you are using pages with multiple columns. Using landscape orientation, you can place more columns of questions on one page. Similarly, you might want to use landscape page orientation for a particularly large grid question. You can mix portrait and landscape page orientation within the same document, provided that you are using single-sided questionnaires. Mixing portrait and landscape orientation in double-sided questionnaires is not supported.