... Changed: . This guide covers upgrading from a previous version of TWiki (such as Cairo or TWiki4.0) to TWiki 4.2 . ... TWiki-4.0.0 was a major new release. ... TWiki-4.2.0 is also a minor release containing a few new features that can be seen by the end user, a large number of bug fixes, and a face lift for the skin. ... If you upgrade from Cairo you can simply use the old file and add the missing new system users to the list of users. If you upgrade from TWiki-4.0.X simply use the old topic. ...