Expansions, available only when viewing HTML reports, and not books, enable report viewers to see children of members and their corresponding data. Rows and columns for which expansions are enabled are displayed with right-facing triangles, which you click to view associated detail. After expansions are executed, pages are positioned near the rows or columns selected for expansion. Expansions are set up during design time.
When using expansions:
Click the right-facing triangle for a row or column to view the next level of detail.
Click multiple times, to see multiple levels of detail.
Click the down-facing triangle for an expanded row or column to collapse its members.