[Typo3-dev] How do I change the position of an added field in the BE records editor?

[Derek Anderson]

Hello all;

First post; please be gentle :)

I am working on a google maps extension for t3, and one of the
requirements is that I can map locations by their address using the
geocoder.us service (yeah, US only I am afraid. I am actually a canuck,
so I can't use it personally either). I needed to add a field for state,
and was able to do so easily, but I am having a hell of a time modifying
it so that it sits at the top, right under city, in the BE forms. I
found the documentation here:
http://typo3.org/fileadmin/typo3api-3.8.0/df/d58/t3lib_2class_8t3lib__extmgm_8php-source.html#l00250
but it is pretty impenetrable, and the api shows a one liner example
that is not a very clear explanation. 

I guess I am hoping that somebody has done this already, and can just
tell me which extension it is in so I can duplicate it by example. Some
more details on the format of this string (which is used to set
position, but I cannot get it to work):
$beforelist="keywords,--palette--;;4,description"
would also be really helpful.