This dialog can be quickly opened by right-clicking on a 2D plot layer and selecting "Add/Remove curve" from the pop-up
menu, or by pressing the "Add curve to graph" icon in the Plot toolbar.
It enables the user to easily add/remove curves to/from 2D plots.
You can select several column names from the list boxes and add/remove them simultaneousely by pressing
the right green arrow button. You can also remove the selected curves by pressing the "Del" key. Warning:
no confirmation is asked for, and you cann't undo your changes.
By pressing "Ctrl + A" you can select all the data sets names available in a
list box.
You can specify a style for the curves to be added by selecting it from the
"New curve style" box. When you open the dialog, the default style (which can be set via the
Preferences dialog) is selected.