Send All Current Fader Values
Send everything that we have. Essentially sets everything to the currently displayed settings.
Probably very useful when trying to program the environment and wanting to have a known state of things.
Special functions in the Logic Pro Environment — Apple Support
Sending fader values: Choose Options > Send All Fader Values (or use the Send All Current Fader Values key command) to make all fader objects send their current values. Choose Options > Send Selected Fader Values to make all selected fader objects send their current values.