StMc package create StMcEvent structure and fills it by Monte-Carlo information. Then  create StMiniMcEvent structure
which contains both, MonteCarlo & Reconstruction information. Then provide matching MonteCarlo & Reconstruction info.
It allows user to estimate quality of reconstruction and reconstruction efficiency for different physical processes.
Actually, StMcEvent is redundunt, and exists by historical reasons.
StMc consists of:

• StMcEvent - structure with MonteCarlo(Simu) information;
• StMiniMcEvent - structure with both Simu & Reco info;
• StMcEventMaker - maker creates and fill StMcEvent Simu info;