Once you have the SCM in order, and before you make any changes: Structure101 is the best way to grok the architecture er tangles of a large code base. They h

Once you have the SCM in order, and before you make any changes: Structure101 is the best way to grok the architecture er tangles of a large code base. They have a trial period that would give you the overview, but their refactoring support is fantastic (in Java at least). https://structure101.com/products/workspace/ https://structure101.com/products/workspace/