Before I started using advanced IDEs that could navigate project structures very quickly, it was …

Before I started using advanced IDEs that could navigate project structures very quickly, it was normal to have a relatively poor visibility -- call it "fog of war/code". In a 500,000 line C++ project (I have seen a few in my career), as a junior dev, I might only understand a few thousand lines from a few files I have studied. And, I had very little idea of the overall architecture. I see LLMs here as a big opportunity. I assume that most huge software projects developed by non-tech companies look pretty similar -- organic, and poorly documented and tested.