Different file formats for storage and manipulation of volumetric data exist today, but none of them has been accepted as a standard by the volume visualization and volume graphics communities until now. This paper tries to change this situation by proposing a new, freely available file format { t f3d}, which, as we believe, fulfills the demands of research and educational environments. We hope that this new format will be accepted by the above mentioned communities and thus will provide a basis for improved communication between different groups and applications.
