This Manual of Style is to help make the encyclopedia easier to read by having rules for its format. It is a style guide. The rules on this page are not the final word on Wikipedia style. One way is often as good as another, but if everyone does things the same way, Wikipedia will be easier to read and use, and easier to write and edit. These are not laws: they are rules that many editors have found to work well in most cases. Editors should try to have their articles follow these guidelines, but remember, often there is an exception to every rule, so also use common sense above all.
One of the great things about changing a wiki is that changes do not have to be perfect—they can always be changed, improved or corrected later on. Wikipedia does not require writers to follow all or any of these rules, but their efforts will be more appreciated when they use this guide.