Delay Designer view buttons in Final Cut Pro
The view buttons determine which control is represented in Delay Designer’s Tap display.

Cutoff button: Show the highpass and lowpass filter cutoff frequencies of taps.
Reso (Resonance) button: Show the filter resonance value of each tap.
Transp (Transpose) button: Show the pitch transposition of each tap.
Pan button: Show the pan parameter of each tap.
For mono to stereo channels, each tap contains a line showing its pan position.
For stereo to stereo channels, each tap contains a dot showing its stereo balance. A line extending outwards from the dot indicates the tap’s stereo spread.
For surround channels, each tap contains a line representing its surround angle (for details, see Work with Delay Designer in surround in Final Cut Pro).
Level button: Show the relative volume level of each tap.
Tip: You can temporarily switch the Tap display to Level view from one of the other view modes by pressing Command-Option.