====== Surface3D Parameters ======

**Auto Hole Threshold**

Specifies the size (in number of voxels) of the largest volume that will be filled by the auto hole-filling command. This command works by finding each unlabelled voxel next to a labelled voxel and using a flood-fill algorithm to find all unlabelled voxels that are connected to it. If the size of this region is less than //Auto Hole Threshold,// then the region is labelled with the current label. The default value is 2000.
**Decimation Factor**

Specifies the approximate percentage of polygons that will be removed from the object surface during decimation (//Model -> Decimate Surface Model//). The default value is 0.2, meaning that approximately 20% of the polygons will be removed each time the decimate command is performed.
**Feature Edge Smoothing**

Turns on (true) and off (false) smoothing of sharp interior edges on the surface model during smoothing (//Model -> Smooth Surface Model//). The default value is false.
**Paintbrush Radius**

The radius (in voxels) of the circular paintbrush that is used for label painting and label erasing. The default value is 5.
**Relaxation Factor**

Specifies the relaxation factor for the Laplacian smoothing performed by the smoothing command (//Model -> Smooth Surface Model//). The default value is 0.2.
**Smoothing Iterations**

The number of iterations of Laplacian smoothing performed by the smoothing command (//Model -> Smooth Surface Model//). The default value is 300.
**Text Radius**

Scale factor for POI and landmark text labels. The default value is 0.75.
**Undo Limit**

The maximum number of label editing actions that can be undone. The default value is 10.