See also Refactoring: Improving the Design of Existing Code (ISBN 0201485672). It may not be exactly applicable, but it outlines a very good mindset and process for improving existing code (e.g. Test, test, test; make small incremental changes; test, test, test; lather, rinse, repeat).

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In reply to Re: Becoming familiar with a too-big codebase? by Fletch
in thread Becoming familiar with a too-big codebase? by aboyd

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