Collection of 3D primitives (fixed-size boxes, boxes of different sizes, or arbitrary sexto-epipeds, cones). 
Each primitive can be assigned a signal value and a TRef.
A collection of 3D-markers. The way how they are defined depends on the fBoxType data-member.
- kBT_FreeBox arbitrary box: specify 8*(x,y,z) box corners
 
- kBT_AABox axis-aligned box: specify (x,y,z) and (w, h, d)
 
- kBT_AABoxFixedDim axis-aligned box w/ fixed dimensions: specify (x,y,z) also set fDefWidth, fDefHeight and fDefDepth
 
- kBT_Cone cone defined with position, axis-vector and radius
 
- EllipticCone cone with elliptic base (specify another radius and angle in deg)
 
Each primitive can be assigned:
- Color or signal value. Thresholds and signal-to-color mapping can then be set dynamically via the REveRGBAPalette class.
 
- External TObject* (stored as TRef).
 
See also base-class REveDigitSet for more information. Tutorial: tutorials/visualisation/eve/boxset_test.C