The document provides guidance on writing an abstract by explaining what an abstract is and the key components it should contain. It advises that an abstract should briefly explain (1) what was done, (2) why it was done, (3) how it was done, (4) what was found, and (5) what it means. The abstract typically is a single paragraph that introduces the purpose and scope of the work, presents the main findings, and discusses the significance of the results and implications.