The model-button prompts the user to select a model-file. This can be a model-file made with
Archimedes Geo3D (format .osg or .ive) or a model in a standard-3d-format like .3ds or .lwo. For
models of different formats just try if they load or not.
Models can be rotated an positioned in the scene freely. The can be intersected with lines and planes.