[TYPO3-dev] Adding BE columns from extension ?

[Steffen Kamper]

"Tapio Markula" <tapio.markula at atwebteam.com> schrieb im Newsbeitrag 
news:mailman.1.1159344594.2071.typo3-dev at lists.netfielders.de...
> Steffen Kamper kirjoitti:
>> ok, i have to ask the other way:
>>
>> where and when are the BE columns rendered ?
>>> $TCA['tt_content']['columns']['colPos']['config']['items']['4']['0'] = 
>>> 'SUB-LINKS';
>
> these are for alt_doc.php (generic file for every record type) and 
> db_layout.php (QuickEdit mode of the standard page module), which are 
> editing for individual records of Typo3 (db_layout.php only for tt_content 
> records). They are not used elsewhere, AFAIK.
>
> If you don't see them in editing content element using those files,
> you have something wrong in your TCA.
Hi Tapio again :-)

ok, thx. This is first part of question, now the second part - "when"
Is it possible that when the extension is loaded this is allready done ?
So AFAIK there is no hook possible, I don't want to xclass this alt_doc for 
that.

Next possibility - is there a Typo3-method to write something in 
localconf.php ?

vg  Steffen