This document provides an overview of creating and working with summary reports in Cognos Impromptu. It discusses: - Creating summary calculations to aggregate data in a report. - Changing how row and group summaries are associated, such as fixing a summary to a specific row or associating it to the lowest grouping level. - Using auto grouping to automatically group data by one or more columns and include summary calculations. - Turning off auto grouping to manually control grouping and summaries. The document demonstrates how to summarize data at the row, group, and report level in Impromptu and manipulate summaries through associations and grouping.