A summary is a brief review of the main ideas and key supporting details of a text. The purpose of summarizing is to prove understanding of what was read. A summary should be much shorter than the original text and only include enough information to convey the overall meaning. Paraphrasing differs in that it rewords the entire passage in one's own words while still giving credit, and can include direct quotes. To summarize effectively, one should read carefully and answer the questions of who, what, when, where, why and how, then write a concise paragraph using only the key ideas and details without opinions or direct quotes.