I am seriously getting tired of answers on the Internet questioning the approach instead of giving the answer.
However, if you had instead told the OP that this is the wrong place for software questions : )
And to answer with your question, every so often, in large corporate environments I do tend to find the mystical locked document that no one can edit and no one knows who originally created. So it is a legitimate question.
Oh, and since I never vote 1's and feel bad about it, you can vote down my how to make a geek happy post : )