There are two commands for showing the history:
Call up the Show history [Show change history] command in the context menu of a class.
Select an event. You can call up the context menu command Show changes to the current version [Show Diff to current version] above the selected event.[11]
As soon as an event line has been selected and you have clicked , the status of the selected version is restored.
Also see Section 1.3.6.6.3, “Revert committed changes”.
[11] only for "Show history [Show history] ", not for "Product history for the subdirectory [Show history of products in subtree] "