2D Graphics pass properties: lead/trail for ground tracks.
  IsLeadDataTypeSupported | Gets a value indicating whether the specified type can be used. | 
  IsTrailDataTypeSupported | Gets a value indicating whether the specified type can be used. | 
  SetLeadDataType | Lead data type. | 
  SetTrailDataType | Trail data type. | 
  SetTrailSameAsLead | Set the trailing display option (and value, if applicable) to be the same as for the leading portion. | 
  HasLeadData | Determine whether the leading display option has value data. | 
  HasTrailData | Determine whether the trailing display option has value data. | 
  LeadData | Lead data. | 
  LeadDataSupportedTypes | Returns an array of valid choices. | 
  LeadDataType | Lead data type. | 
  TrailData | Trail data. | 
  TrailDataSupportedTypes | Returns an array of valid choices. | 
  TrailDataType | Trail data type. | 





