The storage of the view shown in Figure XXX.3.2-1 requires the generation of three Planar MPR VPS SOP instances and normally a Basic Structured Display SOP instance which references the Planar MPR VPS SOP instances.

In order to enable display applications which do not support the Basic Structured Display SOP Class to create similar views of multiple related Planar MPRs the Planar MPR VPS SOP Class supports marking instances as spatially related in the Volumetric Presentation State Identification Module.

This allows display applications to identify Volumetric Presentation State instances for viewing together. Additionally, via the View Modifier Code Sequence (0054, 0222) in the Presentation View Description Module, display applications can determine which Volumetric Presentation State instance to show at which position on the display depending on the user preferences. Refer to Section XXX.4 for display layout considerations.