Mutator FAQ Everything you want to know about mutators. From the mutation device . This is a VERY comprehensive Unrealed, UT Editing, UScript, Mutator reference which I put together. It comes in two flavors. As a compiled html file for windows, and as a web archive for the Mac.
Content is identical in both versions.
That will give you an idea of how comprehensive and encyclopedic it is. There are a number of excellent text editors for windows. This is especially true if you are running it on a Mac. It is a magnificent text editor. WindEdit has some very good support for UScript, and is a good editor as well.