The COS Training Resource Center is offering an upcoming short-term class that offers professionals a way to brush up on their business writing skills. Did you know that grammar and punctuation mistakes could kill your credibility? If you would like to take, your skills to the next level, and be more efficient and professional in your communications this class is for you. You are not alone if you have been perplexed by the following problems; When to use a colon versus a semi-colon? When to use ?whom? or ?who?? Where to place that pesky comma, Or, perhaps someone misunderstood one of your emails, thinking you were rude? Our training will help you take the guesswork out of writing.