If a page box does not match the target page sheet dimensions, the user agent MAY choose (in order of preference) to:
- Render the page box at the indicated size on a larger page sheet.
- Rotate the page box 90° if this will make the page box fit the page sheet.
- Scale the page box to fit the page sheet. (There is no requirement to maintain the aspect ratio of the page or of any elements on the page when scaling; however, preservation of the aspect ratio is preferred.)
- Reformat the page contents, including 'spilling' onto other page sheets.
- Clip overflowed content (least preferred).
The user agent SHOULD consult the user before performing these operations.