Before checking-in files, you may decide which changes to keep (accept) and which to remove (reject) from the edited file. To switch to Edit Mode:
In the CSDiff window, select Edit format from the Format menu.
OR
Click the Edit button on the toolbar.
You may either navigate to the change or you can place the cursor anywhere within the change to accept or reject or edit it. For full information, click F1 after switching CSDiff to the Edit Mode.
Tip: You may execute the Review | Accept All command if you want to acceptall remaining changes. You may execute the Review | Reject All command if you want to rejectall remaining changes.