Select "Data Preparation->Terrain Positions->Back". Specify the input file and the output file.
Output: Slope Back
Terrain Partition File
The terrain partition data generated by "Terrain Partition" modular in "Data Preparation".
Slope Gradient File
The slope gradient data generated by "Surface Derivatives" modular in "Data Preparation".
Redgeline File
The redgeline data generated by "redgeline" modular in "Data Preparation".
Top%
The percentage of the pixels in use in a terrain partition.