When this property is set to True, all E3Chart Pens are displayed on a Legend. The Pen's Visible property is ignored. When set to False, only Pens with their Visible property set to True are displayed. The next script contains an example of using this property.

Sub CommandButton1_Click()
  Set E3Chart1 = Screen.Item("E3Chart1")
  E3Chart1.Legend.ShowAllPens = Not _
    E3Chart1.Legend.ShowAllPens
End Sub