[Zope-CMF] how can I change indexes to Date- or DateRangeIndex in CMF/Plone2

[robert]

Andreas Jung wrote:

>
>
> --On Freitag, 21. Januar 2005 9:45 Uhr +0100 robert <robert at redcor.ch> 
> wrote:
>
>> Hi,
>>
>> I would like to change the indexes that deal with dates to either 
>> date or
>> DateIndex or DateRangeIndex.
>>
>> Can I just change the following indexes to DateIndex ?:
>>
>> Date, end, start ?
>> created, modified ?
>
>
> Jup..
>
>>
>> What do I have to do to use DateRangeIndex. for
>>
>> effecive, expires ?
>>
>
> Jup.
>
> And then reindex all indexes.
>
>
> -aj
>
Thasnks for the answer.
This just sounds to easy to be true :).

How does an RangeIndex know what Range it deals with (in the case of 
CMF/Plone when to show a news item ..)

Robert