In case of not using source version managing system like SVN, GIT, and so on,
you can compare with the old revision through Old Revision Saving function of workbench.
Double-click the eXERD file to compare and open the editor.
Select Window > Show View > Other > History, then History View is opened. Open History View
By clicking the renewal toolbar item,
you can open the record history of input file of the currently active editor or
by clicking synchronization button, you can always display the history of active editor only.
Select one of the versions and select Compare Current with Local by right-click.
In case of Using Separate Managing Tool like SVN
Open the editor by double-clicking an eXERD file to compare with the old version.
Open the History View by selecting Window > Show View > Others > History Open History View
According to the plugins used, UI can be different.
By clicking the renewal toolbar item,
you can open the history of input file of the currently active editor or
by clicking synchronization button, you can always display the history of active editor only.
Select one of the old revisions and select Compare by right-click.