This also applies to code generation. At my first job out of college, it was difficult to piece together where a particular bit auto-created code came from. At

This also applies to code generation. At my first job out of college, it was difficult to piece together where a particular bit auto-created code came from. At my second job, I pushed everyone to ensure that code generated files pointed to their sources (configuration files and generating code). Ultimately, one of our engineers designed it into our codegen framework so well, it basically came for free for our developers. And boy was it so nice to not wonder where the knobs were that changed your output. On a side note, we also checked in the codegened files and that was great for other reasons like reviewability and searchability.