The function Top-Bottom Comparison allows you to view and compare multiple documents at once. This can be useful for comparing different versions of the same test, such as an English version with its Spanish counterpart, or two different tests that cover the same objectives. Top-Bottom Comparison can also be used to easily move problems from one document to another. (For more information, refer to the article Moving Problems from One Document to Another.)

1. Open the documents that you want to compare.
2. Activate Top-Bottom Comparison by choosing Window > Top-Bottom Comparison.
3. The Database Browser will be hidden and the documents will be stacked, one atop the other.
4. To return to the default layout, choose Window > Default Layout.