@BT (BACKOUT TRANSACTION)
The @BT command removes all the database modifications (adds, deletes, updates) performed since the last @END-TRANSACTION command.
The syntax of the command is as follows:
You may exclude one file from the backout process by specifying the file name.
For example, the following command specifies that backout should be performed on all updates excluding the updates done on file EMPLOYEES.
@BT EMPLOYEES.