You can copy all points of the current data set to the clipboard by pressing Ctrl+C or by choosing Copy all data from the Edit menu, or by pressing the corresponding button next to the point list. You can copy the selected data points to the clipboard by pressing Ctrl+Shift+C or by choosing Copy selected data from the Edit menu, or by pressing the corresponding button next to the point list.
You can copy an overview of all data points of all data sets when you choose Show all data as text from the Data menu.