The Keysight 3458A has two menus available from the front panel. The "MENU FULL" has more commands listed and includes the frequently used commands listed in the "MENU SHORT".
The menus are selected from the front panel by pressing the "shift" (blue) key followed by the "MENU" key. The "down arrow" key is then pressed to display "MENU SHORT" or "MENU FULL". The appropriate selection is made by pressing the "ENTER" key when the desired selection is visible on the display.
The menu selection can also be done through the remote interface using the "MENU FULL" or "MENU SHORT" commands.