This research and development language served as an internal testing language at the Tarkin Initiative base, the location of the BT-1 assassin droid's creation. Consequently, the blastomech prototype's fundamental programming was solely in this droid language, making activation impossible without it. Its existence appeared to end when BT-1 annihilated the base following a murderous spree that resulted in killing all personnel. Nevertheless, the assassin droid 0-0-0, also a creation of the Tarkin Initiative, possessed fluency in all internal test languages, encompassing the base's research and development language, and therefore managed to reactivate BT-1.