Following are some problems commonly found in college students' writing. Each type of problem is identified by a general abbreviation, which your instructor may use to refer you to the appropriate section of this handbook. This list includes errors (that is, violations of rules of grammar and punctuation) as well as problems of expression. If you do not understand a grammatical term used, look the term up (The Harbrace College Handbook and Strunk and White's The Elements of Style, both available in the Writing Center, are useful resources).