You can open the Main Menu in the following ways:
From a panel with a Main Menu
Click on the Main Menu.
Use shortcut keys
You can use shortcut keys to open the Main Menu. When you use shortcut keys to open the Main Menu, the Main Menu appears at the mouse pointer.
The
default shortcut keys to open the Main Menu are Ctrl + Esc. To change the shortcut keys that
open the Main Menu, use the Keyboard Shortcuts
preference tool.