level1.tmxcorresponds to a TMXlevel 1 version, -level2.tmx to TMX level 2, and -omegatplus.tmx isan OmegaT+ specific TMX containingcertaintags that the programunderstands.
We can, (if you are one of the smarty-pants who understands the analytics) program a computer, an affordable computer, to test permutations and prove hypotheses that no human could ever possibly do in a lifetime.