Select Previous Version to compare the application edition loaded in your image with the application's previous version in the library.

Selecting Previous Version opens a Changes Browser that displays the contents of the application edition in your image and application's previous version in the library. Using this browser, you can compare the editions' contents. If the version in the library has what you want to work with, select Load Alternatives from the appropriate menu.

For detailed information on comparing applications, refer to the Smalltalk User Guide.