There are several kinds of information available.
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To view the version graph of a resource, in the context menu choose Version Graph.
On a version of a resource on the version graph in the context menu choose Show Content.
This displays the contents of the version.
On a version of a resource on the version graph in the context menu choose Show Changes.
The changes made in this version are shown.
On a version of a resource on the version graph in the context menu choose Show Activity Details to display the details of the activity in whose context the version was created.
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1. Select the two versions to be compared.
2. On the two versions in the context menu choose Compare versions
This displays the differences between the two selected versions of the resource.