• the representation of the trajectory a charged particle followed throughout the experiment
• the history of the algorithm(s) which contributed to the determination of the track
• references back to previous (intermediate) Tracks used to construct this track
  • as the (intermediate) results are not neccesarily persisted, these references may not be availabe when reading back objects from the persistent store
• the object passed to various tools for purposes such as (but not limited to)
  • extrapolation/intersection
  • visualization
  • ...

-- GerhardRaven - 05 Apr 2005