The Dimension Organization contains a set of dimensions. A dimension is a set of Attributes that change on a per-frame basis in a manner that is known before the image is acquired, are defined by the generating application and are especially intended for presentation. Other Attributes may also change on a per-frame basis but if they are not present in the Dimension Organization, they are not considered significant as a dimension for organizational purposes.

Receiving applications shall use the order of dimensions for guidance when presenting images if the Multi-frame Dimension Module is present. The first Item of the Dimension Index Sequence shall be the slowest varying index.