What do we mean when we talk about cleaning a text? We talk about applying changes, for example you can turn all company names to Sentence Case, all UK postcodes to Uppercase or remove any trailing spaces, tabs or punctuation.
It's easy, you only have to paste the text you want to clean, (don't worry, it can be as long as you want) and choose the correction patterns you want to use.
If you want to give a different format to some text, CleanHaven can be a good choice. It will change your text in a snap and it's free.