Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

Nclas12
Ccalextras
Ccalorimeter
Cccdb_reader
Ccherenkov
Cclas12databases
Cclas12reader	Clas12root HIPO file reader
Cclas12writer
Ccovmatrix
Cdetector
CdetectorHit
Cevent
Cforwardtagger
Cftbevent
Cftbparticle
Chelflip
Chelonline
CjsonFileMerger
Cmcevent
Cmcmatch
Cmcparticle
Cmesonex_trigger
Cparticle
Cparticle_detector
Cqadb_reader
Crcdb_reader
Crcdb_root
Crcdb_vals
Cregion_band
Cregion_cdet
Cregion_detector
Cregion_fdet
Cregion_ft
Cregion_particle
Crich
Crichring
Crunconfig
Cscaler
Cscaler_reader
Cscintextras
Cscintillator
Ctracker
Ctraj
Cutracker
Cvertdoca
Cvtp
Nclas12root
CBankHist
CHipoChain	Clas12root reader of multiple HIPO files
CHipoChainWriter
CHipoFileSelector
CHipoHist
CHipoRootAction
CHipoROOTOut
CHipoSelector
CHipoTreeMaker
CNumbersObject
CParticleHist
CParticleTree
CtempHipoSelector
CTRcdbVals
Nhipo
Cntuple_reader
Cntuple_writer