This option allows you to define your own quality metric as the combination of the following quality criteria and element types: Determinant, Warp, Min Angle, and Max Angle.

You can specify the maximum and minimum quality levels of a histogram for quad and tri elements. All values are adjusted to a scale of 0 to 1 when Recompute is pressed.

For example, if the Min Angle Quad is 30 degrees and the maximum is 45 degrees, then 30 degrees will correspond to the minimum value in the custom quality and 45 degrees will correspond to the maximum value.