LibreOffice 6.1 Help
Opens the Chart Area dialog, where you can modify the properties of the chart area. The chart area is the background behind all elements of the chart.
Choose Format - Chart Area(Charts)
Set the formatting options for the selected line or the line that you want to draw. You can also add arrowheads to a line, or change chart symbols.
Set the fill options for the selected drawing object.
Set the transparency options for the fill that you apply to the selected object.
Resets changes made to the current tab to those applicable when this dialog was opened.