Here is a review of the hypothetical/extracted file based on standard Call of Duty localization architecture:
If you own Black Ops 3 on Steam, finding this file is straightforward. However, note that the exact location depends on whether you are running the base game or the mod tools development version.
REFERENCE_STRING LANG_ENGLISH MENU_MAIN_TITLE "Call of Duty: Black Ops III" ZOMBIE_GOBBLEGUM_01 "Perkaholic" ZOMBIE_GOBBLEGUM_DESC_01 "Gives you every perk in the map." MP_ANNOUNCER_VICTORY "Victory!" SYSTEM_ERROR_NO_AMMO "OUT OF AMMO"