From release notes for FC5T3 (web)

[gb spam]

On 3/10/06, Rahul Sundaram <sundaram at fedoraproject.org> wrote:
> The problem with hidden features (such as the previous expert option in
> Anaconda)  is that they provide a alternative code path that is rarely
> tested

given the nature of the discussion on this list, on the test list
(where the response to the first query about this was 'oh no, not this
again') I suspect that what you're saying here might not be the case
for this particular feature.