I ported/rewrote a million-LOC medical imaging workstation app over the course of 2 years with a team of 6. We had a full feature matrix with an extensive manua

I ported/rewrote a million-LOC medical imaging workstation app over the course of 2 years with a team of 6. We had a full feature matrix with an extensive manual testing plan from previous work. I suspect there's insane amounts of duplication.