The Settings Menu

Settings->Show Toolbar: Toggle on and off the display of the toolbar. The default is on.
Settings->Show Statusbar: Toggle on and off the display of the status bar at the bottom of the KmPlot main window. The default is on.
Settings->Full Screen Mode (Ctrl-Shift-F): With this action you toggle the full screen mode.
Settings->Configure Shortcuts...: Personalize the keybindings for KmPlot.
Settings->Configure Toolbars...: Personalize the toolbars for KmPlot.
Settings->Configure KmPlot...: Customize KmPlot. The options available to you are described in Chapter 4, Configuring KmPlot.