Answer:
to help you review something that you have already read
Step-by-step explanation:
A summary is the shorter and precise version of the original text. It includes all the necessary details which are mentioned in the text. It helps in over-viewing what the entire text is all about. To summarize means to write about the text including the necessary details. It helps review the text and remember it. Also, the main and important points become easy to revive by reading the summary respectively.