[TYPO3] customizing Headers

[CAnet // Canè Alessandro]

I'm trying to RENAME the existing - and possibly, even customize inserting new ones - default headers (renaming LAYOUT 1 to 5 in a more user-friendly way) showing up in the select of the text/image content element, but I can't find out how to do it...

I guess It should be somewhere in PageTSCondig but...

Any kind hint from anyone?

Thanks a lot!

Canè Alessandro