Specifies whether to preserve vertex normals when files are retrieved. When this option is on ON (the default), vertex normals are retrieved from the file and used by the renderer. When this option is on OFF, vertex normals are ignored, which means that they are recalculated during rendering.
Specifies the major linear unit for the incoming file.
Specifies the scaling factor for this save. The default is 1.0.
Specifies whether vertices are considered for merging.
ON (the default) – Vertices are merged if they are within the position tolerance.
OFF (the default) – Vertices are not merged.
Specifies how close vertexes must be to be merged, in the current major linear units. The default is 0.0001 unit.