What are the summaries in Moodle for?
The summaries section that appears when you are building a resource and (sometimes) an activity is mostly for navigation purposes and for ease of use. Moodle courses can often become very large and rich with documents that may be difficult to wade through. If you have filled out the summary box effectively, then users can click on the ‘Resources’ or ‘Activities’ list and see, at a glance, a full list of every resource or activity, complete with a quick summary of what each one entails.