1. A summary should include the main points or key ideas of the original text while also providing the reader with a clear understanding of the overall content. A good summary should be concise, accurately represent the original text, and be written in the summarizer's own words, while also avoiding any personal opinions or biases.
2. A summary should not include any new information or ideas that are not present in the original text. The purpose of a summary is to condense and present the existing information, not to add or interpret it. Including new information would not be an accurate representation of the original content and could potentially mislead the reader.