Yes you can find it in English/admin/lan_admin.php line 247
That LAN is used 2 times in admin_ui.php (info).
The great difference between old and new is that although many old defines are still in place and are used, a lot have been rearranged and/or commented (disabled). There is also an amount of new ones..
In v1 this LAN did not exist..
Well anyway iff for Stefan ( SteppeR ) maybe through e107.dk ?
and to help you a little > use a regex soft.. shareware..works quite well on windoos name: ABA Search and replace ..extract a pack on pc, add the location; use the LAN as searchterm...look at results... (nifty).. if you find it in English and not in SE you guess what to do .
In a next step you might want to share the pack at : https://github.com/e107translations would be appreciated...