[TYPO3] constant editor's subcategories labels

[Katja Lampela]

Hi all,

I've been searching for a way to customize the constant editor but I
can't find where to change the labels of the subcategories.

By this I mean for example: "enable" ("Enable features") or "dims"
("Dimensions, widths, heights, pixels")

Now I have in the constant field for example:
# cat=mycategory/dims/a; type=string; label=My label header: My label
comment text.
my_constant = xxx

I think this is where the subcategories are defined:
/typo3/t3lib/class.t3lib_tsparser_ext.php

But where can I change them? I use llxmltranslate for translating, but
can't find the terms in the files.

Thanks for any information!
Katja