My very first programming job was like this. The simple method is this: Leave the code as is because if it ain't broken, don't fix it. However, once you have

My very first programming job was like this. The simple method is this: Leave the code as is because if it ain't broken, don't fix it. However, once you have to go into code and fix it, this is where you can re-write it, leave comments, maybe even put the old code at the bottom in a comment. It'd be too much time and possible errors to fix everything, but if you can go in there and re-write some, maybe even make it more efficient, than you might be able to do it.