Declaration
TPreviewEffect = (peAll, peContrast, peHSV, peHSL, peRGB, peUserFilt, peEqualize, peBumpMap, peLens, peMorph, peRotate, peFFT, peGamma, peSharpen, peResize, peSoftShadow, peAutoEnhance, peCrop, peColorCurve, peLevels, peSmoothing, pePixelize, peTransparency, peOtherColor, peOtherEffects);