Information on area and points inwardly area:
Use this dialog to edit the parameters of series:
The button <Remove> lets you remove the area. Points will not be removed.
The button <Function...> starts the Wizard of approximation on all points inwardly area.
The button <Copy points> lets you copy points inwardly area and put points on the Clipboard.
The button <Remove points> lets you remove points inwardly area.