BAC/TRA are intermediate formats of the model and animation data that are exported from 3D modeling tools. In order to obtain BAC/TRA, apply the plugin that corresponds to your 3D modeling tool. All the exported BAC/TRA formats are always the same, regardless of differences in 3D modeling tools.

Using text strings, Bac6 file describes the material attributes, bone information, etc. that are applied to the model data to be used in MascotCapsule V3. Tra4 file describes the animation information that is applied to the data containing model information. Tra4 file can define following animations: translation, rotation, and scaling animations of the bones defined in Bac6 file; and pattern animation of dynamic polygons.