Control Palette
The menus concerned with the graph are all on this Control Palette. From the top to the button in the left image,
[Area] Palette
[Scale] Palette
[Background] Palette
[Tool] Palette
Clicking a button in the left image will take you to the explanation page.
If the Graph Window is wide enough, [Area] Palette and [Scale] Palette are displayed as one palette, and also [Background] Palette and [Tool] Palette.