Fixed some grammar in ingame help and added info about the "Keep hands free" option.

Did some proofreading of the ingame help, tried to break up a few long sentences and keep the style consistent.
Erm, by the way, what kind of an overrun do you mean? Like in an editor of IDE? Since you select linewrap options manually there, it shouldn't be a problem.

But if you mean cataclysm's linebreaking, surely the line lengths here are irrelevant - they are glued together by the compiler anyway during compilation. So only the total string's length should count.

I'm confused...