FFT graph parameter identifier.

public enum TFFTGraphParamID {
  gpFFTPoints = 1,
  gpGraphType,
  gpWindow,
  gpHorizontalScale,
  gpSubgrid,
  gpTransparency,
  gpFrequencyScaleVisible,
  gpDecibelScaleVisible,
  gpFrequencyGridVisible,
  gpDecibelGridVisible,
  gpBgBitmapVisible,
  gpBgBitmapHandle,
  gpColor1,
  gpColor2,
  gpColor3,
  gpColor4,
  gpColor5,
  gpColor6,
  gpColor7,
  gpColor8,
  gpColor9,
  gpColor10,
  gpColor11,
  gpColor12,
  gpColor13,
  gpColor14,
  gpColor15,
  gpColor16
}