Correction to the previous commit's own result. The raw byte sweep reported rot_n001 "26 times in 7 archives" - a SUBSTRING count. The exact field value occurs zero times, in every IDXD record and every non-IDXD payload. What the disc carries is rot_n001_break x14, LOD_Frame_rot_n001_break x7, GameModel_rot_n001_break x5. rot_n001 exact is not on this disc. A prefix match is not an exact match, and a byte sweep is the tool that breaks it. rou_e202 does exist, in the other vocabulary: a Model field of a Generic record, six times, one per GP_MAIN_GAME_<lang> pack, with no GameResourceID - which is why the GameResourceID census called it absent. Set arithmetic over every IDXD record: roster 40, Generic.Model 46, GameResourceID 480; roster n Model 34, roster n GID 38, roster n both 33. 38 + 34 - 33 = 39, so 39 of 40 are one or the other and rot_n001 is the sole exception. The six that are GID but not Model: mob_n040..043 are the four AsteroidGroup_00N.AsteroidModelName values (asteroid models, not units) and rou_e004 is a Level_0.Model. What selects the 40 is still open, but two answers are dead: not the Generic.Model set (34 of 46), not the GameResourceID set (38 of 480). The 12 Generic.Model values outside the roster include rou_f002 and rou_f004 - the player's own craft for S7-S16/S24-27,29 and for S28 - while rou_f001 is kept, so "the playable models" is dead too. All fifteen artefacts byte-identical.