The Panel Caption dialog is used to change the caption of a panel or a tabbed page (if several panels are docked to the same spot, they are displayed as tabbed pages). To call this dialog, right-click the caption of the desired docked panel or tabbed page and select Rename from the context menu. To call the Panel Caption dialog for an undocked panel, right-click its caption and select Docking > Rename from the resulting context menu.
