Document analysis is very helpful when profiling criminals. The text of a document can help determine the writers age, gender, ethnicity, level of education, professional training, and ideology. Spelling, grammar, syntax and even punctuation can also contribute to solving the case. Also, recipts can help profile a criminal. By seeing what a person buys, you can determine what type of person they are and what they do. Since everyone has unique writing styles, document examiners can use a document to profile a criminal. From their knowledge and grammar, you can detect how educated they are. The style of writing can tell you how old and what sex they are.