So ... is (some of) this 100M lines the output of a code generator which has since itself been lost? If so, then it seems like a good idea to take a good hard s

So ... is (some of) this 100M lines the output of a code generator which has since itself been lost? If so, then it seems like a good idea to take a good hard second look for it: scour every nook and cranny for source code, object code, documentation or any surviving evidence (old developer emails?) of how it worked.