When this option is checked, attributes will be read from the DBF file and attached to each feature. Attributes can be utilized in Terrain in a variety of ways.
Add Theme(s) to Layer Table
The theme name will be added to the layer table. All features created from this theme will be placed on the new layer.
Large File Optimization
Group isolated points
If this checkbox is selected, point entities are combined together into features. This is can significantly improve display speeds and reduce memory requirements when processing large files.