... Trac has a built-in functionality for visualizing тАЬdiffsтАЭ - changes to files. ... Line numbers on the left side indicate the exact position of the change in both the old and the new version of the file. ... When viewing a repository check-in, such as when following a changeset link or a changeset event in the timeline , Trac will display the exact changes made by the check-in. ... The last possibility for examining changes is to use the Last Change link provided by the TracBrowser . ...