Fresnel Value Presets
Used as shortcuts to load Fresnel values when setting up standard or multilayer materials, these values are listed by name in the preset list found in the Reflection tab of the Materials editor. You can access this list by clicking on the 
button next to the Fresnel values.
To create a new preset, click on 
.
To modify an existing preset, click on the corresponding line in the list of presets. Then, modify the Name, Refraction index, and Extinction coefficient values, or delete the preset by clicking on 
.
Deleting or modifying a Fresnel preset has no effect on the materials whose Fresnel values were initialized using a preset.
For additional information on the use of the Fresnel effect, see:
Standard Material