Which term describes the action of moving from high-level summaries to more detailed information?

The term that describes the action of moving from high-level summaries to more detailed information is "Drill-down." This process is commonly used in data analysis and reporting to allow users to start with an overview or summary of the data and then navigate deeper into the underlying details. For instance, if a report presents total sales figures, a user could drill down to view sales by region, and then further by specific products within that region. This progressive revelation of information enables a more granular understanding of the data.

In contrast, the other options refer to different concepts within data exploration and visualization. "Drill-across" generally implies accessing related data across different data sources, while "drill-out" typically allows users to view data from different perspectives or hierarchies without diving deeper into details. "Data slicing," on the other hand, refers to the extraction of a subset of data by applying specific criteria or filters but does not inherently imply moving from a summary to detailed levels of data.