Additional columns in WEB-Page Module

Place this code in your TYPO3 Configuration Array File ie. typo3conf/extTables.php (depends on your localconf.php config!)

$TCA["tt_content"]["columns"]["colPos"]["config"]["items"] = array (
"3" => array ("Header||Kopfzeile||||||||","3"),
"2" => array ("Right||Rechts||||||||","2"),
"1" => array ("Left||Links||||||||","1"),
"0" => array ("Middle||Mitte||||||||","0"),
"4" => array ("Footer||Fusszeile||||||||","4")
);

in your Page TSconfig you have to set this value:

mod.SHARED.colPos_list=1,0,2,3,4

(added item no. 4)

You can add as much columns as you want, but remeber that is restriction in database structure for colPos field = tinyint(3) so max value is 127