There are no mistakes in this newsletter because we used special software which checks your spelling. It is more or less a way to verify. However, it cannot correct errors in punctuation or usage, and it will not find words which are misused but spelled correctly. For example, a paragraph could have many flaws but would be passed by the spell checker. And it won’t catch the sentence fragment which you have. Therefore, the message is that proofreading is not eliminated, it is still very much required.