noun
drill down
Computing term for navigating from a summary view to more detailed data, e.g., clicking a category to see its sub-items.
レポートで地域別の売上をドリルダウンして、各店舗の数字を確認した。
I drilled down into the regional sales in the report to check the figures for each store.
Variant with interpunct; less common in running text.
Borrowed from English 'drill down', a computing metaphor for moving from a higher-level view to more detailed data.