In some situations, it is possible to combine the Fill Color and Size legends into a single Combined (Fill & Size) legend. As an example, if Symbol Fill Color is set to “One color for the entire graph” and Symbol Size is set to “Variable Size”, then the graph could have a single Combined (Fill & Size) legend.

Control of the Show Combined Legend (Fill & Size) checkbox on this page is shared with the controls on the Legend Display Options page of the dialog. The next option on this page includes a checkbox that will Revert legend to size variable values. This is simply a way of reverting the text of the Fill Color legend back to its defaults. The only other control presented on this page is a checkbox to Reverse legend order.