Wavefront OBJ is a text-based legacy 3D model exchange format. Despite its severe limitations in efficiency and features (e.g. no modern material support, no geometry instancing) it remains popular due to its simple syntax and manual editability.
OBJ import has the following options:
Press Browse... to open a file dialog to select an .obj file to import.
Import as static model
When checked, the file will be imported 'as is' and will not be modifiable by cga rules. Otherwise, Start Shapes will be created from the provided (if available: textured) polygons, ready to be used with CGA rules.
Align to terrain
When checked, the geometry will be automatically aligned to the terrain.
Size factor applied to the imported object.
Adds the specified offset to the imported object.