The CVS-based L10n process established for Firefox 1.0 and currently applied to trunk
(Firefox, Thunderbird should follow soon) is also known as "source L10n",
because we have the L10n files directly in the source code in a CVS repository.
Details
CVS repository: cvs.mozilla.org:/l10n
(in parallel to cvs.mozilla.org:/cvsroot
- accounts are different from main Mozilla code repository)