Meter labels are defined here as a comma separated list of dB values to be shown on the side of the meters. This also defines where to the corresponding horizontal markings. Default is -72; -40; -18; -9; -6; -3; -1; 0; 1; 3.
This lets you customize the values at which color transitions occur. You can enter as many values as you wish, as a comma separated list, but make sure the values are in increasing order. Default is -9;0.
The last value always defines the clip level, which will be indicated in red.