This function is only available if you have chosen a hierarchy for at least one characteristic. You can choose a hierarchy using the function Extras ® Choose hierarchy in the report definition or Edit ® Hierarchy ® Choose from the report list.
The function Expand expands the entire report hierarchy one level. That means that every "+" currently visible becomes a "-", and all the nodes one level below them become visible.
If the cursor is positioned on one row of the report, the system only expands that row.
For detailed information about hierarchies, see:
Overview: Characteristic Hierarchies
Functions for Editing Hierarchies