Class Summary Class Description ContextualDiffProviderA seriously better diff provider, which highlights changes word-by-word using CSS. DefaultDifferenceManagerLoad, initialize and delegate to the DiffProvider that will actually do the work. DiffProvider.NullDiffProviderIf there is no diff provider set, this provider will work instead. ExternalDiffProviderThis DiffProvider allows external command line tools to be used to generate the diff. TraditionalDiffProviderThis is the JSPWiki 'traditional' diff.