Displaying/Comparing/Merging Release Versions
The All release versions command is used to display, compare, and merge different release component versions.
Right-click on a release component in a package or under an area and choose All release versions to display the Release Component Versions dialog box.

Select a component from the list and use the buttons as follows:
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View invokes ChangeMan Edit unless you have previously specified a different default editor. For more information about ChangeMan Edit, see the ChangeMan ZDD Tools Guide. 
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Compare invokes ChangeMan Diff where you can compare the selected component with another component that you specify. For more information about comparing files, see the ChangeMan ZDD Tools Guide. 
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Merge invokes ChangeMan Diff where you can merge the contents of the selected component with one or two other component versions and create a new merged version. For more information about merging files, see the ChangeMan ZDD Tools Guide.