[TYPO3-english] Difference between $TCA and $GLOBALS['TCA']

[Jan Kornblum]

Hi newsgroup,

what is the difference between using $TCA and $GLOBALS['TCA'] (used in 
my_ext/ext_tables.php and my_ext/Configuration/TCA/Model.php)?

I am asking this because when using $TCA instead of $GLOBALS['TCA'] it 
seems to be possible to manually adjust the ordering of an extensions 
tables showed in the BE list module...

TYPO3 is 6.2 LTS.

Kind regards, Jan