Automation Menu.

The "Show" options set all the tracks on the Timeline to show the same kind of automation - mute, volume, etc. You can also set single tracks from a menu accessed by right-clicking on the track name panel in the Timeline.

Latch Mode. This applies to recording the automation lines by moving the mixer controls. In Latch mode, when you release a slider or knob, the automation then stays at whatever setting the control is at for the rest of the track. You could use this to make a fade in, for instance.

Touch Mode. In this mode, as soon as you release a control, the automation goes back to whatever it was before. This mode would be used for touching up the automation in the middle of a track. The levels will only be changed for the time when you are actually operating the controls.

The Automation List option brings up the panel for setting automation events precisely.

Ignore Automation on playback.