We've all been there. A teammate walks over (or pings you on Slack) with a massive chunk of unfamiliar code and asks: "Hey, can you explain what this does? Also, why does this specific edge case work like this?" Here’s the catch: You didn't write that code. You've never seen it before. Now you’re stuck spending half your afternoon digging through undocumented functions, tracking down call graphs, and trying to reverse-engineer someone else's legacy logic just to answer detai...