Set of Trajectories.
  AddSeg | Adds a default segment. | 
  RemoveAllSegs | Removes all the segments in the collection. | 
  RemoveSeg | Removes a Segment given an index. | 
  AvailableRoutines | An array of strings returning all available routine types. | 
  Count | Gets the size of the collection. | 
  Item | Gets the item for the specified index. | 
  LoadMethod | File Load Data. | 
  LoadMethodType | File Load Type. | 
  MaxTLELimit | Max number of elements. Dimensionless. | 
  RoutineType | Gets or sets whether a routine type being used. | 
  SSCNumber | Catalog number of the spacecraft. Note that any changes to the SSCNumber will reset the element set collection. Importing elements from file or online storage will also reset the SSCNumber. | 





