This mode evaluates the
config spec against all the files and directories in the snapshot view and
does the following:
- If a version selected by the config spec is different from
the version in the view, the Update Tool copies the version from the VOB to
the view and overwrites the existing version.
- Removes any elements that are no longer selected
by the view.
- Operates on hijacked files according to the options set
on the Advanced page of the Start Update window.